Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9e7df7b992978f0…

MALICIOUS

PDF

76.1 KB Created: 2020-11-23 12:51:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: be21b7da30b47c7a2ec7d0436cf85d75 SHA-1: 115fcd9ea8d4e7308cfe75a2f34e78a1bb32bfc3 SHA-256: d9e7df7b992978f0e80cad23b41272f0beec361a3def4e08026021c8b00910d0
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffmen.ru/aws?utm_term=bulletproof+roadmap+diet+pdf'. ClamAV also detected the file as 'Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0'. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, appears to be a lure related to a 'bulletproof roadmap diet pdf'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffmen.ru/aws?utm_term=bulletproof+roadmap+diet+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4475389/normal_5fb81c84e5ae2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408170/normal_5fab10f091d47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376126/normal_5fa59fa0ac3ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369657/normal_5f8afd22732c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369182/normal_5fa97680c2e42.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/kegubinefuda/automobile_new_technology.pdfIn PDF document text
    • https://s3.amazonaws.com/vizegemawokaxe/murottal_al_kahfi_taqy_malik.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/autosomal_recessive_pedigree_chart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6c8c561-1671-4a96-a2f8-d8228aa9b078/52120782772.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/85917838006.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/auxiliary_verb_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/the_great_adventure_catholic_bible.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65480579-1072-4cca-b181-43c9edddef6c/27259975880.pdfIn PDF document text
    • https://s3.amazonaws.com/rekibedafowow/yhm_upcoming_story.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f747276b-e0a4-457a-987c-a7f3f82ece3e/1396162432.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_off0000ebd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD1 5056 bytes
SHA-256: 16dafa34fb8ecb2cc3e9fedd41c7f220804a3bd6a02913d9dff7502e0b8622eb
font_01_sfnt_off0000fcf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCF0 11596 bytes
SHA-256: e8c681ea426330d58b43a9baa5dbddd91e7bd66966e1648e25776a344174929a

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