Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ae669edc3a5cd0f…

MALICIOUS

PDF

69.4 KB Created: 2021-02-25 15:15:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: fff34c8b41578acbd1bae4d72b8aad43 SHA-1: 70b2c9267d5fa2cc108e8c1f095da92ec314732b SHA-256: 9ae669edc3a5cd0f3a1f9eced197b12a1152184f2b179479a5e4e4474aad597b
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains numerous embedded URLs, with one prominent URL suggesting a phishing or scam attempt by posing as a search result for hacking information. The presence of multiple disposable hosting domains and link farm characteristics further supports a malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/strik?utm_term=how+to+hack+jeep+uconnect PDF link annotation
    • https://cdn.sqhk.co/vekunego/iJFFYgd/todd_rundgren_e_liv_tyler.pdfIn PDF document text
    • http://vanesifonemume.22web.org/97822952928.pdfIn PDF document text
    • https://kurepisafigovu.weebly.com/uploads/1/3/1/3/131398088/55d7adb9d4bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452852/normal_600bd21b61ea8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481985/normal_60072041e1d5f.pdfIn PDF document text
    • http://sk-anker.ru/carmageddon_tdr_20000b126.pdfIn PDF document text
    • https://cdn.sqhk.co/pixorikibam/4fsjbhh/97467307631.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469116/normal_5fef5631f28ca.pdfIn PDF document text
    • https://xovokemopozok.weebly.com/uploads/1/3/4/5/134579322/konixuxu_favoxunumuzewa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fufifaramulemi.rf.gd/jujilodu.pdfIn PDF document text
    • http://tudutov.rf.gd/24649287000.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_off0000d463.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD463 4908 bytes
SHA-256: cbd3ed2c07ecab4b9cf63e8e164e3831c1bc45781ea77e918400e418d4f8d660
font_01_sfnt_off0000e527.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE527 10524 bytes
SHA-256: c616e25ec7682a8982919a9cc35720e2faaa39e56f04daf5ff7d2817f68de69b

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