Malicious PDF — malware analysis report

Static analysis result for SHA-256 80d3c9de43353d16…

MALICIOUS

PDF

69.0 KB Created: 2020-12-17 16:16:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 5f3fa464a1b72ff50ad70cda19c3a995 SHA-1: dd4834955b0676693e356fe2117c1777847511a9 SHA-256: 80d3c9de43353d168c16861a488fa5eea65e9d8643ca9b09b36e81c679246e6a
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, trafftec.ru, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although the document body is heavily obfuscated, the presence of the external URI suggests the primary goal is to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

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=bosch+oil+filter+cross+reference+chart PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4378830/normal_5f8aabe5b8b6f.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/5fc72e3dbcf5f06bcb77810c/t/5fcaf389b495bd2028185153/1607136137788/zegovumerimixajezunovap.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/canterbury_tales_the_knight_s_tale.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf50723570fb44d1f95a4b/1606373491347/skyrim_blue_blood_quest_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/194c0a0c-5b4e-4cff-b180-879d45c177cf/logudi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aef8c4d1-1ec0-42ed-b59d-8a418bf17300/bipadas.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/white_magic_spells.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0de9c5bcb0228a2825217/t/5fc39a3318e72e5fdb4693bf/1606654519444/julian_newman_college_stats.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2374fc19-89b1-473f-ac96-a62af328523a/vawarufu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5a0ccdf132613bbddba36/t/5fd160278ba64b78df472f3a/1607557160413/71942390120.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72a9a600-a8bd-470d-bf33-8b674a1d0e89/mach3_cnc_plasma_manual.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_off0000d32f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD32F 5016 bytes
SHA-256: ce76e97591c7eb796e2f09e37e185fafc47b73af8ededcb695cae12538f77a11
font_01_sfnt_off0000e43b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE43B 10312 bytes
SHA-256: 5db5a48bba9d1d18c006aac57b031579d648cfd01f7781f4f5158959ae57fe69