Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f11ba4725444d79…

MALICIOUS

PDF

121.4 KB Created: 2021-06-27 04:18:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 8befb3dd4f1c5f10ae30553d0e8f44ac SHA-1: a6b19ad465b2f7c2decedb4ecf24898c2f4953d9 SHA-256: 7f11ba4725444d79dd1889860db5d7627b63017d8d92fa490e8307e3bba9d24c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable domains, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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 https://huntic.ru/uplcv?utm_term=quiz+answers+beginning+with+c PDF link annotation
    • http://gezond-trakteren.nl/kasteel-doornenburg-img/bestandenfile/vovavanumovupek.pdfIn PDF document text
    • https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/55205c105463179c8d81be3cfc49dfe7/41919147557.pdfIn PDF document text
    • http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/4vaifrud3r829ndogqmsct2h47/revojuwifapulokawasoronu.pdfIn PDF document text
    • http://esoftland.com/userfiles/file/6752243931.pdfIn PDF document text
    • http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607c4a1ff2f16---toponebow.pdfIn PDF document text
    • http://megat.pl/uploaded/fck_files/file/noxabafovapopanilulowoxal.pdfIn PDF document text
    • http://aps-mes.com/files/file/jokizafonidawoxafuvebukol.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a7b7608544e---27934160925.pdfIn PDF document text
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac772e149cb---33921171430.pdfIn PDF document text
    • http://kino-profi.com/wp-content/plugins/super-forms/uploads/php/files/3ca395228b41e0c4a37c2f99ce19704a/jevuzoripodamuxanezurexo.pdfIn PDF document text
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085425d7ef28---tavemawuwi.pdfIn PDF document text
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/160c92db758078---lotevil.pdfIn PDF document text
    • http://sanitaerprofi.ch/fckeditor/editor/images/file/46874463464.pdfIn PDF document text
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160888a2714d64---59298905543.pdfIn PDF document text
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/956noc2dvef1630lnpcl1rh224/72344814988.pdfIn PDF document text
    • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/4b4914513f191d6738855d60307a2648/73764491882.pdfIn PDF document text
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/d33a5cbe2191905f46ce411e806be030/xigapiru.pdfIn PDF document text
    • http://eska-lift.ru/userfiles/file/tumefovunukajomokeveg.pdfIn PDF document text
    • https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/8e954e8af25bb9ff4b46f5e5a99bce0e/45877374879.pdfIn PDF document text
    • http://2ds-creations.fr/userfiles/file/33280468924.pdfIn PDF document text
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f9d151282e---74678827543.pdfIn PDF document text
    • http://bhk-aindling.de/userfiles/files/fadefewokanukux.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 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_off00017547.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17547 10788 bytes
SHA-256: 2bf1b7e665ea15f408da4c34f096185226549f36c731e3f2f07b14fabd7ec13b
font_01_sfnt_off00018e53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18E53 19000 bytes
SHA-256: 020278dca4cb5f8bc724105b740289cc106a4b9e1a7831769b1fa42ed75a1991
font_02_sfnt_off0001c069.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C069 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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