Malicious PDF — malware analysis report

Static analysis result for SHA-256 76fa3e16b000720b…

MALICIOUS

PDF

89.2 KB Created: 2021-06-28 20:16:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 4490279646fcf913f9c7b4da32e985af SHA-1: 69199de6b2d0e7622ca6cfe53dc139c3466c900f SHA-256: 76fa3e16b000720b78b2baef612bdcf0a3f925b6e051a4bbc039cc7fa42e192d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous embedded URLs that point to compromised WordPress sites and other disposable hosting. These links likely serve as a lure for phishing attacks or to distribute further malware. No scripts were extracted, but the structure and embedded URLs strongly suggest a malicious redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://medvor.ru/uplcv?utm_term=my+exaggerated+life PDF link annotation
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/d9456qu2dk7u6n1k2n4sfp6d9v/gimodejuzefuwaxiwozum.pdfIn PDF document text
    • https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/fb1b39736761a5140f9ef2a468d3b10d/zamibazakajefipa.pdfIn PDF document text
    • https://sandzak.best/wp-content/plugins/super-forms/uploads/php/files/4868cc5cab16a76716cff2a8c36ffd2b/39875375528.pdfIn PDF document text
    • https://law.myvzl.com/wp-content/plugins/super-forms/uploads/php/files/km15dkoiqp8lcp32vpfms9rkh0/dimovotadex.pdfIn PDF document text
    • http://jatyn.cn/upfiles/202105/file/1620536057.pdfIn PDF document text
    • http://fitnessklub-impuls.pl/uploads/assets/file/mekirijaresat.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160a91a79ca41b---juxetegiwikimowos.pdfIn PDF document text
    • https://advantagelic.com/singhania/downloads/file/bopabem.pdfIn PDF document text
    • http://juha.be/_files/file/21561144726.pdfIn PDF document text
    • http://aite-materials.com/upfiles/file/86034745290.pdfIn PDF document text
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/157e4707ee9bc3ce1a4862dfbe55ad1d/gopojebalaf.pdfIn PDF document text
    • http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607a355f467ae---72483523501.pdfIn PDF document text
    • http://conblocmanado.com/pics/file/xakufe.pdfIn PDF document text
    • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/llkhobhp6amp53hlbb3oi4knsj/85055691142.pdfIn PDF document text
    • http://muszempilla.com/files/file/tetamimorevi.pdfIn PDF document text
    • https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/f682110df9968c53838f65af07f0423c/judug.pdfIn PDF document text
    • https://hoalavender.net/upload/files/kakefufomof.pdfIn PDF document text
    • https://functionalmovement.gr/wp-content/plugins/super-forms/uploads/php/files/3467cc46af8ffc81947e84f2423e4ea8/98893131444.pdfIn PDF document text
    • http://ya-ke.cn/admin/upload/29257796861.pdfIn PDF document text
    • http://www.argentum.com/wp-content/plugins/super-forms/uploads/php/files/3l2o1cu4v5v7e7tihb0nerhkss/88460518459.pdfIn PDF document text
    • https://cosalesrep.com/wp-content/plugins/super-forms/uploads/php/files/48bc752786b513e210d7304dcde7d1f1/50409459607.pdfIn PDF document text
    • https://ystechpro.com/nbloom/fckuploads/file/mefoziga.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_off0000fbe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE0 10348 bytes
SHA-256: cddbd2500fd47ff3342eb3ef58a9121e5c4bcb55795d66223855abede5e74b78
font_01_sfnt_off00011323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11323 16808 bytes
SHA-256: 763040551856c4d16200c273de0012d35816ff525751e40180b79ea9b69d6ca6
font_02_sfnt_off00013e4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E4E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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