Malicious PDF — malware analysis report

Static analysis result for SHA-256 f060fed25ba5c186…

MALICIOUS

PDF

83.2 KB Created: 2021-09-02 15:48:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 14b701d254b54c754dc858e0698cd23a SHA-1: 9cc3313c2a0ed7e04ab805ec73fdb66919da68bb SHA-256: f060fed25ba5c18659a391291e7ddccb7545f5e5d96a7c7233a46d4eb76f1c9e
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised WordPress installations or disposable domains, indicating a link farm for malicious redirection. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to host malicious content or redirect users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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 http://eakqshop.com/ckfinder/images_store/files/zapejixiwenu.pdf In PDF document text
    • http://austria-ex.com/images/blog//file/8698746796.pdfIn PDF document text
    • http://amandamaitland.com/images/file/vexav.pdfIn PDF document text
    • http://studiobaldizzone.com/userfiles/files/40136241226.pdfIn PDF document text
    • https://newtop-eg.com/userfiles/file/gaxinofe.pdfIn PDF document text
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d245d3eaeca---girom.pdfIn PDF document text
    • http://apvn.info/userfiles/file/31916934136.pdfIn PDF document text
    • http://gokea.org/upload/editor/files/33814642387.pdfIn PDF document text
    • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/jfp315227sbci0j3gq99nkcbp3/50365628599.pdfIn PDF document text
    • https://abandassociates.com/ckfinder/userfiles/files/36118698683.pdfIn PDF document text
    • https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/1607ec2f97cbfa---susifukari.pdfIn PDF document text
    • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/f1bbe463a8a231af9ebeebdcf80089b7/28067806542.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160bd4300efe46---puximitifoman.pdfIn PDF document text
    • http://agataklimowska.pl/userfiles/file/geguzuginukibuwad.pdfIn PDF document text
    • http://techsystem.gr/data/uploads/ckeditor/files/20403385107.pdfIn PDF document text
    • http://businessvaluationapp.com//fck_files/file/ziwubafewinilogofow.pdfIn PDF document text
    • http://kozszemle.hu/uploads/files/jagawax.pdfIn PDF document text
    • https://marblobath.com/app/webroot/img/files/98344980997.pdfIn PDF document text
    • https://detectiveoffice.net/userfiles/file/jalatobuzogaj.pdfIn PDF document text
    • https://eatorhours.org/e-bussiness/fckimages/file/metenoxulub.pdfIn PDF document text
    • https://canevastoilestjean.com/upload/editor/file/bojudititodemorekip.pdfIn PDF document text
    • http://techbis.pl/files/file/jinul.pdfIn PDF document text
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/16092ecb513d90---garujozozalebako.pdfIn PDF document text
    • https://gmnavarra.es/ckeditor/files/81693863798.pdfIn PDF document text
    • http://ladue69.com/clients/876446/File/55433680178.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=pdf+creator+gratis+italianoPDF link annotation
    • 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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d91c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD91C 21132 bytes
SHA-256: 407f3a6d32225493c0f0a7aa5c0015dcae6ebfc88e1c73ce15f98394ca53c81a
font_01_sfnt_off00010f02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F02 10652 bytes
SHA-256: ae05f5fd0f08c2117643e57b20cdfe7bdf98be2bb7c414693f5c4f0746eb96df
font_02_sfnt_off0001274b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1274B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.