Malicious PDF — malware analysis report

Static analysis result for SHA-256 634ac4bca796f0e6…

MALICIOUS

PDF

80.2 KB Created: 2022-05-29 21:47:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-28
MD5: 28fd7581c9308419bb2be6a69dc1b5d2 SHA-1: 10226cf7a05cadf9c46365118755cefc97b6517c SHA-256: 634ac4bca796f0e670bb3859444fe0fcc0ca2eee85307422375e76777d69dece
236 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9911

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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://podar.co.za/XSRYdR1H?utm_term=cinema+4d+r20+anleitung+deutsch+pdf+file+converter+download+online PDF link annotation
    • https://ceylanotel.com/firma/files/48698944544.pdfIn PDF document text
    • http://tt-ural.su/admin/ckfinder/userfiles/files/xitisusavuwefexevemawexo.pdfIn PDF document text
    • http://safetruck.gr/images/file/kisulas.pdfIn PDF document text
    • https://luxesystem.site/js/ckfinder/userfiles/files/jogetonupef.pdfIn PDF document text
    • https://birogiso.weebly.com/uploads/1/3/4/6/134694086/loranega-kireveni-dosipijigakux.pdfIn PDF document text
    • http://take114.kr/FileData/ckfinder/files/20220302_9FBDC7CB025EAA04.pdfIn PDF document text
    • https://sellos-mecanicos.com/wp-content/plugins/super-forms/uploads/php/files/80579be09ad92d999f5321c3647cfb9a/fixazofuwawanuru.pdfIn PDF document text
    • https://sibanozaniso.weebly.com/uploads/1/3/4/8/134858677/b49a85c38e88.pdfIn PDF document text
    • https://ludekomu.weebly.com/uploads/1/3/4/5/134505051/629716.pdfIn PDF document text
    • http://for-man-woman.ru/userfiles/files/44352084763.pdfIn PDF document text
    • https://xiwepowi.weebly.com/uploads/1/4/1/7/141720232/5604701.pdfIn PDF document text
    • http://okuninka-biale.pl/userfiles/file/jelibibifametotasimefik.pdfIn PDF document text
    • http://thainightjob.com/ckfinder/userfiles/files/62122984529.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1627e8f429f4ca---27216276227.pdfIn PDF document text
    • http://www.zulfugar.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161fd0075091ba---ledimafisamibexotoso.pdfIn PDF document text
    • https://julafelobu.weebly.com/uploads/1/4/1/3/141398871/sotagotigeluj-zemuvuzew-lolugeret-zebalajusedikud.pdfIn PDF document text
    • http://kimdaiphatsteel.com/Images_upload/files/xojonowanidixejaw.pdfIn PDF document text
    • http://uhorder.com/upload/files/didavoxunita.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622583ead32d4---dajilutuxogawilexabike.pdfIn PDF document text
    • http://www.albertoabajolimousin.com/abm/Bibliotecas/kcfinder/upload/files/befapiketi.pdfIn PDF document text
    • https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/b65424fd98791060a708a4e1d606d00f/14320187277.pdfIn PDF document text
    • http://orel-trinity.ru/sites/default/files/file/juparadodifaje.pdfIn PDF document text
    • https://stdtekstil.com/upload/ckfinder/files/97528425462.pdfIn PDF document text
    • http://phdpecs.hu/userfiles/files/1565274805.pdfIn PDF document text
    • https://roshnaai.com/ckfinder/userfiles/files/50906453974.pdfIn PDF document text
    • https://viajespereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/1628ba0852c1d1---wudavodetuxutorawegozole.pdfIn PDF document text
    • https://gunexiduvubaj.weebly.com/uploads/1/4/1/5/141592633/bamevu_daxut_nufogegexigim.pdfIn PDF document text
    • https://www.photosenpoesie.fr/ckeditor/kcfinder/upload/files/jinogawobibetugu.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_00_sfnt_off0000d425.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000d425.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d425.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD425 11668 bytes
SHA-256: 1845be142bba6f35091f1cea7ea9a8e28ad88fb2dc3cf1fbcb2e9f17bc32a8c8
font_01_sfnt_off0000efab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFAB 16384 bytes
SHA-256: 3d4c83af73d26ca0163278a8f6f1bb6874448fc02fb92f57c316e5c9c030a209
font_02_sfnt_off00011a1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A1E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1