Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f10a164f2dc1077…

MALICIOUS

PDF

90.9 KB Created: 2021-03-11 19:58:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e9751931981ac1057bfb83264b64a490 SHA-1: 2b6e08ee2e1aecfd2e23baf85075a209af521985 SHA-256: 3f10a164f2dc1077bf58e994d8bcb3a82ae871bc492b05aa26f764d1fbf6b052
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, with one prominent URL being `https://botokaw.ru/strik?utm_term=how+to+make+coleman+fuel`. This URL, combined with the heuristic `PDF_SEO_DISPOSABLE_LINK_FARM`, indicates a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to redirect users to a phishing site or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://botokaw.ru/strik?utm_term=how+to+make+coleman+fuel PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4486200/normal_6018ae9429651.pdfIn PDF document text
    • http://freds.space/cant_connect_foscam_to_wifinnjei.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366407/normal_5ff7660ea36e0.pdfIn PDF document text
    • https://wojanoxunoliwam.weebly.com/uploads/1/3/5/3/135394081/nuritix.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/wesuvepubin.pdfIn PDF document text
    • https://zudejafig.weebly.com/uploads/1/3/2/6/132681624/ef7848b7c36.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/94080942384.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371020/normal_6003d770d45f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448124/normal_6046e0d83e05b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4504554/normal_6022558bb8ff7.pdfIn PDF document text
    • http://dimax.website/char_broil_grill_recipes1dge2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410431/normal_5fe314d478b55.pdfIn PDF document text
    • https://raguwamirib.weebly.com/uploads/1/3/4/6/134630778/01fc70f1.pdfIn PDF document text
    • http://torchland.xyz/78507358296s090x.pdfIn PDF document text
    • http://detonic-ro.website/esl_adjectives_to_describe_personality7jj4c.pdfIn PDF document text
    • http://porizaritofo.mypressonline.com/nofexaxudidoremor.pdfIn PDF document text
    • https://s3.amazonaws.com/vuterijoze/71080117545.pdfIn PDF document text
    • https://gumewixolasadaz.weebly.com/uploads/1/3/4/6/134659592/gufinadafamulu.pdfIn PDF document text
    • https://wudegilunukoga.weebly.com/uploads/1/3/1/3/131379548/8387435.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393041/normal_6006a4e1b0820.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fararisujis.myartsonline.com/how_to_pick_up_walmart_grocery_order.pdfIn PDF document text
    • http://vawirir.atwebpages.com/nememadejijukebaxufori.pdfIn PDF document text
    • http://pekafujojef.onlinewebshop.net/60522471535.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://scripts.sil.org/OFLIn 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_off0001123b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1123B 4868 bytes
SHA-256: fc6fa5712fed99633bd729c43535821ed90a6da9c400e5e850dbdb4b033dae8f
font_01_sfnt_off000122ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122CE 10728 bytes
SHA-256: 7d4293eb718cb187b7e631b64a5a38bb6c9bf4c55a47f3d15c25daa3719d227d
font_02_sfnt_off000147b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x147B7 16096 bytes
SHA-256: 37e7e7e9114bd13ff8332e6897528b8343bfbb4b2dd84d96d31ee0d9080a0a97