Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e9c6125b39b56cb…

MALICIOUS

PDF

78.4 KB Created: 2020-11-19 22:45:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 2221c704b2adab71724c6e170e7b318f SHA-1: 1d3d29dfd14d3d8db592b7254c996798cc08bd42 SHA-256: 1e9c6125b39b56cb25fa3ebb5451b562781b6a5bfdaed28b2dd188783ca77429
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'trafficel.ru', which is likely a phishing or malware distribution site. The document body is heavily obfuscated, but the presence of the external URI and the overall verdict strongly suggest a phishing or downloader attack pattern.

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://trafficel.ru/123?utm_term=the+everyday+writer+with+exercises+6th+edition+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450635/normal_5fa4bf7d3455a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407303/normal_5f9ebe8d484f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365580/normal_5f873dc935678.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367667/normal_5f9271963ccbc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423166/normal_5fa6231bd818f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366398/normal_5f9ac7b972869.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492536/normal_5fb6cffe7c9db.pdfIn PDF document text
    • https://defiancebulldogs.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/difigomisosak/woolworths_personal_loan_online_application_form.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/how_to_solve_difficult_probability_problems.pdfIn PDF document text
    • https://s3.amazonaws.com/wamatasamegu/borderlands_the_pre_sequel_challenger_trophy_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/auditor_general_report_phoenix.pdfIn PDF document text
    • https://s3.amazonaws.com/lefemijip/padmavati_full_movie_download_torrent.pdfIn PDF document text
    • https://s3.amazonaws.com/legipalofi/54794173396.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/photosynthesis_crossword_answer_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/arduino_uno_programming_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/microsoft_snapshot_viewer_free_download.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_off0000f4ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4AE 5636 bytes
SHA-256: f8f55bab45fb6e89a19838a4bdb793bf37a53f838545d04ab99dde4ac3115b30
font_01_sfnt_off000107f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107F1 10552 bytes
SHA-256: f0ba4ae900a5e74887567abfde698cef74b4881f758ac70aed8e1c060f30e525

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