Malicious PDF — malware analysis report

Static analysis result for SHA-256 14c11ebff389023c…

MALICIOUS

PDF

307.6 KB Created: 2022-03-28 16:50:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-17
MD5: 11d6ea16730f1f9edd7bb54aa22ce4de SHA-1: 61bab9f4cfdafe52e136ac548b18e8f81810c48b SHA-256: 14c11ebff389023cc8051ec16c4277023a8e68648e758673ab5553a5f4b0aa3a
306 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5497

Heuristics 9

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PHP webshell / backdoor source critical WEBSHELL_PHP
    The file contains PHP server-side code with the signature of a webshell/backdoor (named PHP webshell banner (madspot)). A webshell takes attacker input from an HTTP request and runs commands/code on the server. Flagged as a malicious hacktool artifact even when carried inside a document or archive — the code does not execute from the carrier, but the file is a webshell.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://lazav.co.za/XSRYdR1H?utm_term=destiny+2+arcadian+chord PDF link annotation
    • http://jatechkj.pl/upload/fck/file/1974196120.pdfIn PDF document text
    • http://atlasbasincli.com/panel/kcfinder/upload/files/marexi.pdfIn PDF document text
    • http://hausdergesundheit.net/userfiles/files/xaginedopaxakizin.pdfIn PDF document text
    • http://thepssmi.org/kcfinder/upload/files/42455280202.pdfIn PDF document text
    • https://5703n1n6999-6a55.com/contents/files/8912044676.pdfIn PDF document text
    • http://gniortho.com/files/Upload/file/gevajalig.pdfIn PDF document text
    • https://madspot.dk/ckfinder/userfiles/files/42252112195.pdfIn PDF document text
    • https://www.pension-chevaux-haras-gabereau.fr/ckfinder/userfiles/files/18804296839.pdfIn PDF document text
    • https://www.intermediastudios.com.mx/wp-content/plugins/super-forms/uploads/php/files/895a9f7161e5b52e87b98afd2d041953/22621916332.pdfIn PDF document text
    • https://plasticosgyc.co/kcfinder/upload/files/zaximulubepok.pdfIn PDF document text
    • http://unionnutritech.com/upload/files/77187921475.pdfIn PDF document text
    • https://brtim.com/uploads/wysiwyg/files/52128632660.pdfIn PDF document text
    • https://paardenwelzijnscheck.nl/app/webroot/files/ckeditor_files/files/45476925332.pdfIn PDF document text
    • http://vmkmsz.hu/userfiles/file/48835520673.pdfIn PDF document text
    • http://rracc.com/file_media/file_image/file/14079937228.pdfIn PDF document text
    • http://www.procuradoresgipuzkoa.com/js/ckeditor/kcfinder/upload/files/kakiwunukanajadevezimuwon.pdfIn PDF document text
    • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/btig565ag7fqgmd1qhl650m0d2/namejuguku.pdfIn PDF document text
    • http://namaslennikova.ru/kcfinder/upload/files/ruvivadavubewikejen.pdfIn PDF document text
    • http://kondicionery-himki.ru/upload_picture/file/tuvexefakoza.pdfIn PDF document text
    • https://www.bluelabs.it/shazar/admin/assets/js/ckeditor/kcfinder/upload/files/files/70555455423.pdfIn PDF document text
    • http://rosritual.su/app/webroot/js/ckfinder/userfiles/files/16546287314.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/pedexuzemaluzafewavu.pdfIn PDF document text
    • http://mtsp.by/userfiles/files/fatenurezudupiriginararin.pdfIn PDF document text
    • http://fitnessklub-impuls.pl/uploads/assets/file/2167633624.pdfIn PDF document text
    • https://dodatkireklamowe.pl/web/uploads/files/76666749655.pdfIn PDF document text
    • http://ideatity.com/ckfinder/userfiles/files/27425566593.pdfIn PDF document text
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/162201ef21d51f---tovesotaf.pdfIn PDF document text
    • http://alzinda.fr/ckeditor/kcfinder/upload/files/17882304637.pdfIn PDF document text
    • http://bsbcarpet.com/userfiles/file/32757286045.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620334365aac4---43065554537.pdfIn PDF document text
    • https://psychologgia.pl/Upload/file/41909796491.pdfIn PDF document text
    • https://soechi.com/userfiles/file/88556140926.pdfIn PDF document text
    • https://www.seminariosanpiox.it/ckeditor/kcfinder/upload/files/vozukegasosejupanazume.pdfIn PDF document text
    • https://simorgh.it/uploads/file/27673513502.pdfIn PDF document text
    • https://10playsolutions.com/clients/softklk/documents/_articles_/file/98853771394.pdfIn PDF document text
    • http://bochkari24.ru/pic/file/xivulu.pdfIn PDF document text
    • http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/ea4c01560bb062b06ea78c36683a1e0d/katovamudikusogelin.pdfIn PDF document text
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/7efe5c001375c9181b1b2a1334a7da51/fezezobunutivefokonenutim.pdfIn PDF document text
    • http://znsedu.net/admin/ckeditor/kcfinder/upload/files/48351528492.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn extracted file (font_01_sfnt_off00045ba2.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_01_sfnt_off00045ba2.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00040f0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x40F0D 27324 bytes
SHA-256: 118da437d48f71ee50dd32926e7d3dda47fc2184caf125a8d411e1c004a99005
font_01_sfnt_off00045ba2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45BA2 10656 bytes
SHA-256: 718c541f363cbc5bdbeeeef3091349d81625d39d8e0d468b1e1b73609083e71a
font_02_sfnt_off00047421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47421 19716 bytes
SHA-256: 31644f02b93e3e4e5032288652d490477098f921d68f320395a58cb0c89c3b18
font_03_sfnt_off0004a704.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A704 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9