Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb0a02b95ef3e595…

MALICIOUS

PDF

63.3 KB Created: 2020-11-10 11:46:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ecf02708db0b4580333e6015d1193388 SHA-1: 771dcbbaadd9f7ae0e8689923c46e50bcddeae90 SHA-256: eb0a02b95ef3e59537a37919a0e93099fc1ff79e7acbeb442eee7d24bbf45564
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URL pointing to 'traffine.ru', which is likely used to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to 'advertising definition business'.

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?keyword=advertising+definition+business
    • https://cdn-cms.f-static.net/uploads/4446645/normal_5fa236b527943.pdf
    • https://cdn-cms.f-static.net/uploads/4377114/normal_5f9f6c3821128.pdf
    • https://cdn-cms.f-static.net/uploads/4445115/normal_5faa5b8a8af3d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/33000b9c-1ef6-44fa-b630-bdb7f5ac28d6/album__structure_rptitive_cycle_1.pdf
    • https://s3.amazonaws.com/didowugorokirug/idle_heroes_tier_list_zeals.pdf
    • https://s3.amazonaws.com/gonima/pikonoladibadorubif.pdf
    • https://s3.amazonaws.com/mijedusovineti/55184447131.pdf
    • https://s3.amazonaws.com/pexodugosa/81132033945.pdf
    • https://s3.amazonaws.com/xafaxotaful/40584289007.pdf
    • https://s3.amazonaws.com/rezugekolaba/61943812552.pdf
    • https://uploads.strikinglycdn.com/files/0dc97029-314b-454e-a1b1-dda303faace1/67915272658.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_off0000be71.bin
b06283c497f4bc580919233ea422e6b47af75543ecb46659319b48f284202caf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBE71 5020 bytes
font_01_sfnt_off0000cf9f.bin
81ed0203ad623acf775978b95f2180476bc810464a1134bae3cdac50ecf136a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCF9F 9792 bytes

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