Malicious PDF — malware analysis report

Static analysis result for SHA-256 8534935664b61105…

MALICIOUS

PDF

69.1 KB Created: 2020-11-24 07:14:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97f726763a8919e83063b9c51624bfed SHA-1: 4f3e11cbfa19f7f7b96923bcddc49fc02980722e SHA-256: 8534935664b61105bbfb24bcb4fc6b26ef1dcd42bee3323c5f31b3a6ca9f93c7
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier. It contains an embedded URL pointing to 'traffine.ru', which is likely used for phishing or to download a secondary payload. The document body, though heavily obfuscated, appears to reference a product review, suggesting a social engineering 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://traffine.ru/123?utm_term=deuter+guide+35+review
    • https://cdn-cms.f-static.net/uploads/4420766/normal_5fa7056a12a28.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/janodojivi/altistart_48_fault_codes.pdf
    • https://s3.amazonaws.com/kelukakeb/vajipojofuxenukeneronoxad.pdf
    • https://s3.amazonaws.com/bisazabe/is_the_division_an_mmorpg.pdf
    • https://s3.amazonaws.com/baxunaf/madden_mobile_20_event_schedule.pdf
    • https://s3.amazonaws.com/bivanud/wewukas.pdf
    • https://uploads.strikinglycdn.com/files/5a4bc932-fa8e-45e0-84c6-1ac77a631739/kapomuwewiju.pdf
    • https://s3.amazonaws.com/subud/abecedario_aeronautico.pdf
    • https://s3.amazonaws.com/jasipefulaxiduj/the_hurricane_in_their_eyes_were_watching_god.pdf
    • https://s3.amazonaws.com/bidurudilidujug/betetutejulixos.pdf
    • https://s3.amazonaws.com/jivala/sunbeam_ylr2_5_90hz3.pdf
    • https://s3.amazonaws.com/jesidofefe/48752548327.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_off0000d2c3.bin
92fe0a3c3e2ec7f0001edb50bf6968e98df245e39da8c55624a89f26773591ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD2C3 5012 bytes
font_01_sfnt_off0000e3ff.bin
c8a1bc9779328b4829faaa83715993929e2dc88f896ebcde5dc3fa1e984be836		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE3FF 10528 bytes

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