Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0628979d8062314…

MALICIOUS

PDF

58.5 KB Created: 2020-11-23 13:28:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: f38858cece0181db5a7c19c5ffc965a9 SHA-1: 1300c13278fd78519368925bfa5ce4ddea38e0e8 SHA-256: e0628979d80623143c55bf1be9e126eb454741dbb816f6b89cf20d171e598e29
214 Risk Score

Malware Insights

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

The PDF contains embedded links, with one identified as a known malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and the ClamAV detection 'Pdf.Phishing.Trojan-d2568dad23a94d95-10044375-0' strongly indicate malicious intent. The presence of a link farm suggests an attempt to distribute or host malicious content, likely through a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/strik?utm_term=mi+hombre+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4390643/normal_5fa9ac35476fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473938/normal_5faaff2b484cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423133/normal_5faeca4d60c94.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366344/normal_5f9471ca2a9a9.pdfIn PDF document text
    • https://xedaliwim.weebly.com/uploads/1/3/1/4/131454603/8678923.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371267/normal_5f91b780bcdeb.pdfIn PDF document text
    • https://vodoxuzet.weebly.com/uploads/1/3/2/6/132681632/974fb09f32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418984/normal_5fa83809e053d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vutame/93903216670.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/bupijuwanukudibidulimine.pdfIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/97937248343.pdfIn PDF document text
    • https://s3.amazonaws.com/xovajukoxin/82106005803.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/global_writing_for_public_relations.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_off0000aa9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA9C 5004 bytes
SHA-256: 9be708b7668a7d6677b9e762de7e00baf1116d29b275a70bf6a822d247b1dd0c
font_01_sfnt_off0000bb77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB77 9948 bytes
SHA-256: 1165c94a3715ec24cebd9382eb398e0b25eabfaf6d7693a4a32dfcdf7f13f9f9

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