Malicious PDF — malware analysis report

Static analysis result for SHA-256 489806b574020a59…

MALICIOUS

PDF

66.4 KB Created: 2020-12-07 14:36:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: a5cc7e57317882373f8d329cb0b7d7d5 SHA-1: 35c594bdea97d808093e60de0d55acebbec87755 SHA-256: 489806b574020a59b098a74f377c62cba6d0a36a559e1c63852196081802f6df
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing purposes. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of an external URI and the overall classification suggest this PDF is designed to trick users into visiting a malicious site, potentially for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffset.ru/aws?utm_term=jkbose+date+sheet+2019+10+class PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4372740/normal_5f9c7a9b7bccc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413712/normal_5f9b69a8af7d7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408197/normal_5fcb017fa3f35.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/5fc0f66f116eb00e3c4c456d/t/5fc1bf61a97599144e3859fc/1606532963804/nemijurinilufiliwa.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/63497575533.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/lean_on_me_sheet_music_with_letters.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/fairfax_county_police_daily_reports.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc15a3c60f2895dc1eafeb7/t/5fc3de33173fb5383b1a3973/1606671924177/xukikubamugubulimagu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf9365147b14804f8970c/1606285622567/81576208859.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/pirukewonajorabukezabivun.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_off0000c602.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC602 5608 bytes
SHA-256: c4b2ae234a8b690a7963d875b61584d466cbf24ab61d9a8607ccb80beec22d24
font_01_sfnt_off0000d90c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD90C 10432 bytes
SHA-256: e74d2fda8b69eafbd5ae23b2a33bda22dfbc7521da7cc6016b7211d58aa29aff