Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4ebaa41b42214f7…

MALICIOUS

PDF

71.7 KB Created: 2020-11-22 22:59:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 3e848f45ba4d038d0940b5f237e5ddad SHA-1: beae15ecec0f60bafa22dc2d6c59f8babe0b3bd4 SHA-256: e4ebaa41b42214f7f244a1c303ff1de45c794e44f6d509d5e9abb553b6c22b13
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely for a phishing or scam attempt. The document body, though heavily obfuscated, appears to be a lure related to product sales.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffset.ru/123?utm_term=pro+wings+shoes+velcro PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367644/normal_5f88a20eb783f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381748/normal_5fa86cd8e7a01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374374/normal_5f9069261452c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369923/normal_5f8e9439f0434.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384029/normal_5f8d59008189c.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/dazifozixawus/roger_stone_cuckold.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/archaeology_and_humanity_s_story.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/zowew.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/64558588081.pdfIn PDF document text
    • https://s3.amazonaws.com/vonusirukete/national_anthem_lyrics_lana_del_rey_and_i_remember_when_i_met_him.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_off0000db99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB99 5004 bytes
SHA-256: c61d2e67dbbbcb0990e79e4b982f260d2be579250b0da0a0e726846c2c74c79a
font_01_sfnt_off0000ecbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECBC 10916 bytes
SHA-256: 00af8e27f89c4639e6f894300c15eed8c7c2ba3ba28ad69545743c4c702469c6

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