Malicious PDF — malware analysis report

Static analysis result for SHA-256 aefc60b8b642fa52…

MALICIOUS

PDF

63.6 KB Created: 2020-12-16 17:35:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 771900d9e2e4702048e2d3658fac42d3 SHA-1: b36dccb888a58d41865da6fc5180a3ccd822d7f0 SHA-256: aefc60b8b642fa52a5c8e16befb9dfd34364d6a70c118907786effc28a1a1f13
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URL pointing to 'trafffi.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to a Netgear manual, aligning with common social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafffi.ru/123?utm_term=netgear+wpn824+v2+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4474734/normal_5fc80d20dbd16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374517/normal_5fc164eaa85b7.pdfIn PDF document text
    • https://fudixiboronis.weebly.com/uploads/1/3/4/3/134322082/a1aa20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370051/normal_5f925670940d6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379744/normal_5fc4fe7c36871.pdfIn PDF document text
    • https://wevepoguf.weebly.com/uploads/1/3/4/7/134717949/nelerofuweru.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/zagapaxa/kunadodevopupinuru.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf684e3c02f22b9d0599fe/1606379598676/zilejabomu.pdfIn PDF document text
    • https://s3.amazonaws.com/bogeguva/kennzeichnungspflichtige_allergene_liste.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/autocad_2015_complete_tutorial.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_off0000b4a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4A0 5496 bytes
SHA-256: 77dad8470147a3e5a700a3312d0c2a6dd7595d3102486a8eed75d876ec3c9990
font_01_sfnt_off0000c76a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC76A 12900 bytes
SHA-256: 24b4311f0f74c1fca52968eb368e9eff64be128b7444c6dde0edd1a302ace3eb

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