Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b5dc64ae5647dba…

MALICIOUS

PDF

84.3 KB Created: 2021-06-29 14:03:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 90010979a543a216c074d2ca4c93963f SHA-1: 4c66571089ce1c4cbed2a40a293f2fbc65733e91 SHA-256: 4b5dc64ae5647dbae4b97430230439ec9e64400e39f8a4a491fb6b61fd27ec78
156 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 CMS platforms or appear to be part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the structure and URL patterns suggest the PDF is designed to redirect users to potentially malicious content, likely as part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 6

  • 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 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://ash-graphy.com/userfiles/file/11740855282.pdf In PDF document text
    • http://bitite.lv/media/txt/122/file/5447000002.pdfIn PDF document text
    • https://samarpanbharat.org/trila/userfiles/file/85689616179.pdfIn PDF document text
    • https://sf-tfi-pgu.uz/wp-content/plugins/super-forms/uploads/php/files/2b277cd30f6295a4459c99a9f18c6aa4/ravawezojuwin.pdfIn PDF document text
    • http://3dprofi.net/images/uploads/file/xevotipigupu.pdfIn PDF document text
    • http://btc-ltd.com/upload/file/57274194544.pdfIn PDF document text
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16071e81bf2420---62053554295.pdfIn PDF document text
    • https://sacc-la-chaux-de-fonds.ch/fichiers/file/pusul.pdfIn PDF document text
    • http://maynenkhiinverter.com/media/ftp/file/77660037942.pdfIn PDF document text
    • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608633de9482c---90432320029.pdfIn PDF document text
    • https://khanikango.in/file/tiguk.pdfIn PDF document text
    • https://glycocalyx.nl/userfiles/image/file/86768901388.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/79089c0c33758eea1340ad3222efc345/74050466888.pdfIn PDF document text
    • http://middlegeorgiacoinclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/160985239c8eb6---vefira.pdfIn PDF document text
    • http://autosoftware.company/autoresponders_images/files/96873896393.pdfIn PDF document text
    • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/16082e22a4a40b---xawudogaxuv.pdfIn PDF document text
    • http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d1b33393dfa---78922630795.pdfIn PDF document text
    • http://daydala.com/userfiles/file/luruzibek.pdfIn PDF document text
    • http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/353m580tnk9dqd79v36q077o16/81120235381.pdfIn PDF document text
    • http://anvlaw.com/userfiles/file/lusogatilogewoxul.pdfIn PDF document text
    • https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/684a8ac3d609dc28bba4a825e0d164af/jijosud.pdfIn PDF document text
    • http://zulassung4you.de/bilder/file/raliwonivebarodewaliju.pdfIn PDF document text
    • https://kawanmto.info/contents//files/vimakizupirat.pdfIn PDF document text
    • https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb0e41a83f---kilerosiv.pdfIn PDF document text
    • http://lnianemarzenie.pl/userfiles/file/zuzowoz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=2020+schedule+a+deductionsPDF 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_off0000e9b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000101cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101CB 10612 bytes
SHA-256: cb3ab9aecdaa2490dfcd2f8260cd59f642fc4cf04bde0b85a8010add2e165082
font_02_sfnt_off00011a07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A07 16136 bytes
SHA-256: 2cba909d0ca4da8a90fcc988bf5b3e36414d6873026bba5f62b9a5b77b2c3bb1

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