Malicious PDF — malware analysis report

Static analysis result for SHA-256 2036f148eacc156c…

MALICIOUS

PDF

72.0 KB Created: 2021-01-19 06:42:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: e97e1a2d0705aca0e17fea3315786d68 SHA-1: a008cf41ed0c36c6a086c0ec472e7bb35328ea96 SHA-256: 2036f148eacc156c583563cb92d2e042800f5b3348521f1ab611596469889421
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file contains a large number of external links, identified as a link farm. The presence of ClamAV detection and ML classification strongly suggests malicious intent, likely related to phishing or SEO manipulation. The file's structure and numerous external URLs indicate it's designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://trafftec.ru/123?utm_term=high+king+emeric PDF link annotation
    • https://kaxutaxi.weebly.com/uploads/1/3/4/3/134387751/venemomukop.pdfIn PDF document text
    • https://wegefaraza.weebly.com/uploads/1/3/4/7/134703567/6891054.pdfIn PDF document text
    • https://site-1175642.mozfiles.com/files/1175642/36269307349.pdfIn PDF document text
    • https://site-1176360.mozfiles.com/files/1176360/xedipaziso.pdfIn PDF document text
    • https://piroveda.weebly.com/uploads/1/3/2/7/132740505/27735b91e9.pdfIn PDF document text
    • https://site-1175642.mozfiles.com/files/1175642/mma_pankration_apk_mod.pdfIn PDF document text
    • https://zopoxetofosifa.weebly.com/uploads/1/3/4/8/134863155/1142228.pdfIn PDF document text
    • https://tupirusu.weebly.com/uploads/1/3/4/7/134702138/bepinorinalowedaxutu.pdfIn PDF document text
    • https://site-1191354.mozfiles.com/files/1191354/kivazogezilizul.pdfIn PDF document text
    • https://gunobapeve.weebly.com/uploads/1/3/4/7/134706327/luwemidi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365540/normal_5f91fdd5e5db8.pdfIn PDF document text
    • https://site-1166710.mozfiles.com/files/1166710/tadolixapox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457296/normal_5fa1107f77ba6.pdfIn PDF document text
    • https://mokitigek.weebly.com/uploads/1/3/1/6/131606839/dofoju_luxunuwova.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/divili_dapixi.pdfIn PDF document text
    • https://sodomolu.weebly.com/uploads/1/3/5/3/135398587/wiroditunij-jatarezofuzoz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407057/normal_5f943b609825e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD99 4820 bytes
SHA-256: 8e1f24f1130a5dd764a34d6f421937150a049ef2bdc0706985372a5e9bbc20c3
font_01_sfnt_off0000eddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDDB 11040 bytes
SHA-256: 98974fb28911880f5108af9e6c0a254f94f5ca128c84473d08c14131e2cdd406

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