Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcaabf1a0dffacf2…

MALICIOUS

PDF

81.5 KB Created: 2020-12-15 10:47:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 38a08da4749dbe836ed2aefb5723f040 SHA-1: 1432bfcda15b96046c42c69d49ac432ef407d6fc SHA-256: dcaabf1a0dffacf2ff0e7cdec84db9d22a89a5ba893a609ede2a7080d16b3b2f
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. An external URI pointing to 'trafftec.ru' was found embedded within the document, suggesting a phishing attempt to redirect the user to a malicious site. No scripts were extracted, but the presence of an embedded URL and the overall detection profile indicate a likely phishing lure.

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://trafftec.ru/123?utm_term=diablo+2+amazon+builds
    • https://cdn-cms.f-static.net/uploads/4381101/normal_5fd7dcff92667.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wilugugo/zawupexamaferufe.pdf
    • https://s3.amazonaws.com/rizijubovapuk/ramitedazotozojumilagudad.pdf
    • https://uploads.strikinglycdn.com/files/d6977536-462a-4195-8757-1ea9e3760cdb/gucci_replica_belts_for_men.pdf
    • https://uploads.strikinglycdn.com/files/5273bb66-0844-4d83-8fe6-8fb473c198a3/steve_wilkos_with_hair.pdf
    • https://uploads.strikinglycdn.com/files/c491a14f-b22e-476d-90b9-d7461ad905a2/bijonoxixatuvigatiliru.pdf
    • https://s3.amazonaws.com/jazuravazaguz/george_foreman_grill_instructions_manual_grp4.pdf
    • https://static1.squarespace.com/static/5fc5b6f82bbd740658277995/t/5fd1b85c1693665fc7d09b0e/1607579742395/lipinaniponurakixulezur.pdf
    • https://uploads.strikinglycdn.com/files/8d7e0975-7a68-43d9-8d4f-e7000395544f/puxejuz.pdf
    • https://uploads.strikinglycdn.com/files/a06500fe-16df-491a-86af-b466d5a109f0/14050574481.pdf
    • https://s3.amazonaws.com/mipizaju/xudefogu.pdf
    • https://s3.amazonaws.com/jamokaroxoj/hipospadias_y_epispadias.pdf
    • https://s3.amazonaws.com/nupotukig/hrv_design_guide.pdf
    • https://uploads.strikinglycdn.com/files/f3b528b7-6825-4ac4-9927-208e529e28ff/papa_freezeria_game_unblocked.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000102dd.bin
54a503073b52a561cb692de9cd850b945082b511891416af94af0094a306e24d
pdf-font-stream PDF embedded font (sfnt) at offset 0x102DD 5196 bytes
font_01_sfnt_off00011485.bin
5272efaea5bf4ebc6153e6c65f6b59ea677117b64baa723b269ff09eadaad9ff
pdf-font-stream PDF embedded font (sfnt) at offset 0x11485 10648 bytes