Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce63ea82f09d229d…

MALICIOUS

PDF

67.0 KB Created: 2020-12-07 07:50:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 22e6858b06f1d6e8f5d38ddd249b59be SHA-1: 1933046a866b1a10e08412f5948df09cf5da11f7 SHA-256: ce63ea82f09d229daae75313e5d2ae0532c0bf7118fe48c899a7b05e9f142b1e
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 a phishing trojan and a machine learning classifier. It contains an embedded URI pointing to 'traffine.ru', which is likely part of a phishing or malware distribution scheme. No scripts were extracted, but the presence of the malicious URL indicates an attempt to redirect the user to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffine.ru/123?utm_term=map+of+greyhawk
    • https://static.s123-cdn-static.com/uploads/4405420/normal_5fca91591be73.pdf
    • https://cdn-cms.f-static.net/uploads/4366362/normal_5f8cca081b885.pdf
    • https://cdn-cms.f-static.net/uploads/4370057/normal_5f8fee41c8e6d.pdf
    • https://cdn-cms.f-static.net/uploads/4460954/normal_5fba19ef6a8c8.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fosawef/verbal_ability_by_sujit_kumar.pdf
    • https://s3.amazonaws.com/midipes/guxuzew.pdf
    • https://s3.amazonaws.com/murudute/66321958882.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf6945f81c9a2a0c9a6a90/1606379857093/fabivufikuzitowofup.pdf
    • https://s3.amazonaws.com/fotojipifuzitul/arithmetic_progression_extra_questions_and_answers_class_10.pdf
    • https://static1.squarespace.com/static/5fc29fd4c14dfd36fefc97f1/t/5fc50c7b3485235c86654bab/1606749311855/16511192738.pdf
    • https://uploads.strikinglycdn.com/files/366922e2-1bea-4b51-9da2-c5360d54aafd/84967444572.pdf
    • https://uploads.strikinglycdn.com/files/24ae770c-1c05-4a0b-97d8-532a7e75135c/no_promises_mp3_song.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_off0000c894.bin
09894e735423217e70f34ebfcf20f1f7e1cbd50df7fc094e8f46085534b1254e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC894 5216 bytes
font_01_sfnt_off0000da7d.bin
9e473e54c9654c5d008a7193acc9684feb2b7f63053c99fa37978493b13a36dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA7D 10528 bytes

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