Malicious PDF — malware analysis report

Static analysis result for SHA-256 68a376f34c08fe84…

MALICIOUS

PDF

72.1 KB Created: 2021-01-09 07:49:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 176ee7ef18c2de5bad80567ef75b0c88 SHA-1: 70b85d48c12abda17b5012eae51507ce5ff56cd7 SHA-256: 68a376f34c08fe84a08c4a75b6662e8578ca190881539628766b7a7869d508cd
96 Risk Score

Malware Insights

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

The file was identified as malicious by a ML classifier and ClamAV, with a high risk score. It contains an embedded URL pointing to 'trafftec.ru', which is likely a phishing lure. The PDF structure and embedded content suggest an attempt to trick the user into visiting this external site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://trafftec.ru/123?utm_term=ed+hardy+cologne+hearts+and+daggers PDF link annotation
    • https://fenolipemul.weebly.com/uploads/1/3/4/3/134341818/9217923.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417032/normal_5f9cf6e10543d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478687/normal_5faa1ad17982f.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/ligewajinaxi.pdfIn PDF document text
    • https://pepisukuwen.weebly.com/uploads/1/3/1/6/131606293/gijoxub.pdfIn PDF document text
    • https://wanovupejofo.weebly.com/uploads/1/3/4/5/134580977/5433930.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468289/normal_5fc5193584288.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/falevi/87765762213.pdfIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/basics_of_hardware_networking.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/fire_emblem_three_houses_class_mastery_guide.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_off0000db45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB45 5260 bytes
SHA-256: 692e91186e2e1c71532c8d0fd6c1d5dd0c261bbca1ceb9b4996bc60212c0c3d3
font_01_sfnt_off0000ed2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED2E 11912 bytes
SHA-256: 36d189bf59b48d73cdd729e571e0a432323461c1f2188b62cce08af4c8f23428

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