Malicious PDF — malware analysis report

Static analysis result for SHA-256 58084e15de36addb…

MALICIOUS

PDF

69.2 KB Created: 2020-12-01 09:15:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: a84359ffb1c46eb978576f01f59f32ac SHA-1: 47272e42300f4e1a680c5c384e4aaee9d222d126 SHA-256: 58084e15de36addb4c10c91a8e9872a44c63035e28d8fd0ea6caee069d07ce09
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File T1059.007 JavaScript

The PDF contains heuristics indicating a lure to install a browser extension or update, a common social-engineering tactic for malware delivery. The ML classifier strongly flagged this PDF as malicious, and ClamAV detected it as a phishing trojan. The embedded URL likely serves as the initial point of contact for the malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=yahoo+mail+notifications+not+working+android+2020 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369518/normal_5f8b3cc9a7d71.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448718/normal_5fa149b9f03a8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe22b7fa04221c71e9c136/1606296256604/94580424825.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0369177-2fec-453c-8f26-6c7caf340929/isotopes_ions_and_atoms_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cafa36e-fbae-4fa1-9bfa-10b377dd6702/8368542510.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f7235687f52b6b817f64/t/5fc3720708845d0924f5c1a1/1606644234987/natural_increase_rate_meaning.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe2f2dbc819f1cf4a2d72d/1606299437601/11009118074.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe0b7d2dd96f5918b5901a/1606290301633/pennwood_condominium_association_inc.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e80068612547ed5e2b99/t/5fc3340408845d0924f2061c/1606628357585/didutumasupirexebej.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/9-_fluorenylmethyl_chloroformate_merck.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86e9bbc1-0a4d-4e53-a6cd-7257b1961d93/es_file_explorer_apk_apkpure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7056589-2658-4765-a346-55ee8938ce87/dazotu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc18edba8793968640cfc97/t/5fc3587c9ee0f32b87bdf1fc/1606637693256/nba_western_finals_stream_reddit.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0fa26e2fce462bc8c54f9/t/5fc545df3485235c8673bcbb/1606764000264/nematocera_vs_brachycera.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_off0000cf4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF4A 5828 bytes
SHA-256: 8eadc37504ba90a704794f75100ac431816ecded70049667392434c470a1336f
font_01_sfnt_off0000e308.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE308 10176 bytes
SHA-256: f0c5f1fa6b719d372cd0cdee6fce9e943c3bb236d46bc7efc72f80003259de3e

Open this report in the interactive analyzer, or submit your own file for analysis.