Malicious PDF — malware analysis report

Static analysis result for SHA-256 794f015de435f3c8…

MALICIOUS

PDF

86.0 KB Created: 2021-07-01 15:51:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 2cf0a4063d561d7b3a9cad928f2ae11f SHA-1: f6223c0ddd4a5cacb6ff5f1f8cc2ef31d654a8bd SHA-256: 794f015de435f3c80fa1bd902eb816441857f6bf7365d955c804f6b4c2333304
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm or phishing lure. The presence of these links, combined with the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic, indicates the document's primary purpose is to redirect users to potentially harmful external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609bf3e147fa8---60037788662.pdf In PDF document text
    • http://bigband-ulm.de/userfiles/files/mozebugag.pdfIn PDF document text
    • http://miamiokclassof65.com/clients/d/db/dbefc63a503cf3d3a4f9fb61678ecc08/File/25426386154.pdfIn PDF document text
    • https://jaunimodienos.lt/wp-content/plugins/super-forms/uploads/php/files/f8r378r55hlmnloro7ed2hkdrc/43917412708.pdfIn PDF document text
    • http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd87b3234be---lixewufozubamopote.pdfIn PDF document text
    • http://thaihotelsale.com/FileData/ckfinder/files/20210614_8ABD5EADED305E2F.pdfIn PDF document text
    • http://opakowania-loga.pl/zdjecia/fotki/file/zizezebe.pdfIn PDF document text
    • https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c8dd7a3334f---76087949141.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/t2k0drp87r6ev80132rv4dggpf/vomilovufusopubajilumo.pdfIn PDF document text
    • https://www.saammohaseb.ir/wp-content/plugins/super-forms/uploads/php/files/26ff5ce703487514dc046fe4955c000b/jafijudijobawita.pdfIn PDF document text
    • http://dioceseofniranam.org/userfiles/file/zabiminaxevudosanilasi.pdfIn PDF document text
    • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083b11c71c19---70675998194.pdfIn PDF document text
    • https://red-adlay.com/upload/files/xanafuwominomewoweja.pdfIn PDF document text
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac712a3f917---37618568831.pdfIn PDF document text
    • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac3e64ea28c---vedopekupududexiwojozef.pdfIn PDF document text
    • https://winston-woodward.com/wp-content/plugins/super-forms/uploads/php/files/fce26ddc4a20c0e6c06a442fdbab00cf/zovopifejozitojavogim.pdfIn PDF document text
    • http://asbufestival.com/uploads/FCK_files/file/22631409496.pdfIn PDF document text
    • https://www.qlsny.com/wp-content/plugins/super-forms/uploads/php/files/7902ed226e5dfc038a3e0334a295c9ef/34435632356.pdfIn PDF document text
    • https://pluviaterra.mx/wp-content/plugins/super-forms/uploads/php/files/c7f888dd6ea1286ee82d07795f50d39e/rarululu.pdfIn PDF document text
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b6899282d10---visesikivurigojesuxi.pdfIn PDF document text
    • http://studiomarazzi.eu/userfiles/files/terurigidun.pdfIn PDF document text
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae93b04e762---76316966968.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=scientific+reason+for+blinking+of+right+eyePDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE40 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010652.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10652 16528 bytes
SHA-256: be731aeeff9461a756baf24f0e20af6661fb67d9e63aeca858abf9a91a99e466
font_02_sfnt_off000130fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130FE 11036 bytes
SHA-256: 99b180ba4810f0eabd97e6472f117bed980758ebff4c1cbb794592658d84c2ce

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