Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eebfd2820204151…

MALICIOUS

PDF

109.3 KB Created: 2021-05-17 21:53:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 09cc305f11b151df4d22a54a68a58e97 SHA-1: 2f0386acee9ea0a157ab4cf3ef1de5171dda3cb5 SHA-256: 2eebfd28202041512dc73923f8b5379c988dc2a6d362c075da9de74f370aff0e
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document contains numerous external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The heuristic 'PDF_SEO_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' indicate a high volume of links, with one pointing to 'https://seumenha.ru/strik?utm_term=passtime+gps+hack'. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/strik?utm_term=passtime+gps+hack PDF link annotation
    • https://xobijuveja.weebly.com/uploads/1/3/1/6/131606615/8193749.pdfIn PDF document text
    • http://sojurufo.iblogger.org/codex_alimentarius_general_guidelines_on_claims.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447641/normal_60525d5cd470e.pdfIn PDF document text
    • https://bozelisu.weebly.com/uploads/1/3/2/6/132695328/3d1e604.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402933/normal_60218dc6ae3df.pdfIn PDF document text
    • https://derigibi.weebly.com/uploads/1/3/4/4/134447264/kifasisudofexur-xivorodezujimal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467273/normal_600be303a7f65.pdfIn PDF document text
    • http://sevosegopuro.iblogger.org/dungeons_and_dragons_5e_unearthed_arcana.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451210/normal_603cfd7c6028d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450640/normal_60277ea47207a.pdfIn PDF document text
    • https://masoluvilat.weebly.com/uploads/1/3/4/5/134576839/jigibunake.pdfIn PDF document text
    • https://fetepidema.weebly.com/uploads/1/3/4/6/134684810/aabdacc15f975.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371791/normal_5fde90a589ab0.pdfIn PDF document text
    • http://wedudixunuluwef.iblogger.org/aircraft_maintenance_engineer_jobs_australia.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418391/normal_60590ab305c45.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://timivaferegigor.rf.gd/panasonic_dvd-s700_eg-k_dvd_player_schwarz.pdfIn PDF document text
    • http://bimivopi.epizy.com/budapest_metro_map_2018.pdfIn PDF document text
    • http://zifopodisinuri.rf.gd/sibikisizos.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016dc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16DC6 5284 bytes
SHA-256: 6ec7c6cd689a35bb9484c360f4ea505162115221a059347ac16d919337d6c45f
font_01_sfnt_off00017fa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17FA2 11816 bytes
SHA-256: bf6b42689a1a166ab14982845d64b9bcec890b9cf0fd0d01e3e0f191cd88ab51

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