Malicious PDF — malware analysis report

Static analysis result for SHA-256 95d09279c761ba39…

MALICIOUS

PDF

65.8 KB Created: 2020-12-23 20:05:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0841778146637fc3d8bfca613b55328 SHA-1: 129ecc235db55d08d33f0f04112c71664c41b079 SHA-256: 95d09279c761ba3947d966e76d7e678d39652c1b98539de890abf1f9c6562b13
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to online music streaming, aiming to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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://trafffe.ru/strik?utm_term=mp3+player+online+streaming+indonesia
    • https://mefarixikokupa.weebly.com/uploads/1/3/4/7/134759110/4934025.pdf
    • https://cdn-cms.f-static.net/uploads/4487381/normal_5fd3451754223.pdf
    • https://xubuvene.weebly.com/uploads/1/3/1/3/131380433/mofamavi_salakesu_sesiguno_rogut.pdf
    • https://punofusa.weebly.com/uploads/1/3/2/6/132695323/divexowam-papixomafanobap-futim.pdf
    • https://cdn.sqhk.co/lumozupa/E0ogcnA/70574985959.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jaloto/40280956066.pdf
    • https://uploads.strikinglycdn.com/files/504e11e6-45b4-42f6-b735-7dec419888c3/pearl_river_middle_school_pearl_river_ny.pdf
    • https://s3.amazonaws.com/sevoga/girl_scout_cadette_badges.pdf
    • https://s3.amazonaws.com/zetare/sweet_potato_vine_planter.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_off0000c338.bin
63339a317cdc354246b0a37f8e5988c190b5aed4c7a9ebbc3afc2f1930379b42		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC338 5552 bytes
font_01_sfnt_off0000d61a.bin
7e14a0c915469c42ebc58a93530fd9526c8dd1b5d1301d24ccdda053bcbb3055		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD61A 10844 bytes

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