Malicious PDF — malware analysis report

Static analysis result for SHA-256 501d1e9b5500ad6f…

MALICIOUS

PDF

79.9 KB Created: 2021-01-11 11:40:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: f60c007d87742a0bc22a472d9ccf8557 SHA-1: c946fa65ebe4b4b969b4b6c17ace027bf38841c6 SHA-256: 501d1e9b5500ad6fa29e725576edfd8c2176b836e40b1fc57051ee3b28047d16
96 Risk Score

Malware Insights

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

The file is a PDF document that contains embedded URLs, one of which is flagged as malicious. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of embedded URLs suggests an attempt to redirect the user to a phishing or malware distribution site, likely as part of a spearphishing campaign.

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=level+gathering+fast+ffxiv PDF link annotation
    • https://cdn.sqhk.co/depifozopupe/h1gftzH/rezijixobebubusolovifapuv.pdfIn PDF document text
    • https://cdn.sqhk.co/nupasoxure/uagcjaK/bidisafepududin.pdfIn PDF document text
    • https://cdn.sqhk.co/mimotulifoti/jbZ21gf/railroad_crossing_signals.pdfIn PDF document text
    • https://cdn.sqhk.co/vujagefamig/b9gd3ge/73614649869.pdfIn PDF document text
    • https://cdn.sqhk.co/tivomepu/jbVjev0/knife_hit_game_play_online.pdfIn PDF document text
    • https://cdn.sqhk.co/filomada/hibGXnW/pekejimetekegunitij.pdfIn PDF document text
    • https://site-1173505.mozfiles.com/files/1173505/mafaxuxe.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/zirojopemup/spanning_tree_protocol_commands.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/13098348573.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromopelurab/allergy_report_chicago_il.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/natural_causes_of_air_pollution.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_off0000fc7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC7E 5096 bytes
SHA-256: 851f5a393ce8ffa38c594bb9a555ef9ca94b57bb0d3b7cb1cf1c1a2144c6bec6
font_01_sfnt_off00010de0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DE0 11192 bytes
SHA-256: 01ff47e42208635e5c8c7f83cac6e7163c8552bd750572b87dfdf0d9aaff1229

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