Malicious PDF — malware analysis report

Static analysis result for SHA-256 369b142011394aca…

MALICIOUS

PDF

71.5 KB Created: 2020-12-29 10:52:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 974e8b6e8b6c77a0417b851a3f2112ca SHA-1: 1e70c6bcdf468ac531bb4e27f8231aad7eb045b2 SHA-256: 369b142011394aca886b83bb2eabbb49876d3d47ed5235c2fecc4d71caf43495
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, traffset.ru, which is likely part of the lure. The document body, though heavily obfuscated, contains text related to a search query, suggesting a phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=food+giant+murray+ky+phone+number
    • https://cdn-cms.f-static.net/uploads/4448740/normal_5fa76512922a1.pdf
    • https://cdn-cms.f-static.net/uploads/4380219/normal_5f8bc542658c5.pdf
    • https://static.s123-cdn-static.com/uploads/4457570/normal_5fc932858f303.pdf
    • https://gifetapajuloper.weebly.com/uploads/1/3/4/6/134682222/9a81780f.pdf
    • https://cdn-cms.f-static.net/uploads/4383165/normal_5f8d3176c4438.pdf
    • https://ruwuragawani.weebly.com/uploads/1/3/4/3/134383911/8669564.pdf
    • https://miwofovewunot.weebly.com/uploads/1/3/4/8/134873206/veredoguzoxumol.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fifomi/76128035072.pdf
    • https://s3.amazonaws.com/zasepo/oracle_business_intelligence_tutorial_espaol.pdf
    • https://s3.amazonaws.com/dowadotiju/consul-_template_json_array.pdf
    • https://s3.amazonaws.com/xilasisefi/how_to_feed_in_skyrim_as_a_vampire.pdf
    • https://s3.amazonaws.com/bulikowexunepov/parepometidegokiwene.pdf
    • https://s3.amazonaws.com/kakekojezutok/24699004433.pdf
    • https://s3.amazonaws.com/pugomonapoxuxe/madame_butterfly_sekiro_guide.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_off0000db69.bin
ec0202f4db8871db10acafaff74d91bed1020c2b59ba2d75070c58a10b01de15		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB69 5424 bytes
font_01_sfnt_off0000edb8.bin
2de40daeba4c7782f07e89099ec5d520918144d208e790c3f5e0a5e85c8b3f63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDB8 10448 bytes

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