Malicious PDF — malware analysis report

Static analysis result for SHA-256 00780fd2059e8e70…

MALICIOUS

PDF

67.2 KB Created: 2020-11-25 14:29:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: ad84a03e15d751e50230e756432466b1 SHA-1: 4a6175c2811a0e34352c1abf74696be944906e02 SHA-256: 00780fd2059e8e7023554ed2bdc535d22cccc004ac439fc7066026ba120cb71d
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. An external URI pointing to 'trafftec.ru' was extracted, suggesting a phishing or malware distribution attempt. The document body is heavily obfuscated, but the presence of embedded URLs and the overall detection profile strongly suggest a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/strik?utm_term=pathfinder+unseen+servant PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4411498/normal_5fb5da383dbdd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366952/normal_5f98d0cc92858.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382631/normal_5f8f5f4b3ba65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413113/normal_5faf2e4ee0a48.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8369a548-10c5-4364-b2b4-42e5d679cf7b/sbh3_boiling_point.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6b67533-7d32-4f2a-95fd-a4855e8aa4f1/pefumosebamawe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f41e8f9-5e4c-4efc-a5ce-ef57588cc95f/zariwuvosom.pdfIn PDF document text
    • https://s3.amazonaws.com/wegugus/assistant_manager_accounts_resume_format.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/68721606003.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/kobugidugatomovuxotewaba.pdfIn PDF document text
    • https://s3.amazonaws.com/batoragubukepo/dyson_cinetic_big_ball_animal_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ab1143b-986b-4e62-b202-8564f2a73d8e/sps_conference_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85605660-a848-409f-bea2-e8f86e3753ec/71956712545.pdfIn PDF document text
    • https://s3.amazonaws.com/vizegemawokaxe/dimikusomon.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_off0000c9a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9A1 5024 bytes
SHA-256: d84e55d33b7b7e619d70e771ddd561c8fcf3a929d6e676dc23cac237b9f77ccb
font_01_sfnt_off0000dab8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB8 10780 bytes
SHA-256: d7cc3ff7cc00d954eff8b0d97af9c75562d9a3eed7a37de1c4af06a6357d6e69

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