Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6c68f30454442aa…

MALICIOUS

PDF

67.1 KB Created: 2020-12-18 16:35:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a6821016a4f2071cad72444454b3d3d3 SHA-1: 15596c4f1b02442d158f21706bfa017d4532c25d SHA-256: d6c68f30454442aad11a8ae6401003132cc62c25bc02a8969c9dc64a0068e68f
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. An embedded URI points to a suspicious domain, traffking.ru, which is likely used to host a malicious payload or facilitate a phishing attempt. The document body, though heavily obfuscated, contains references to 'tv guide' and 'wkhtmltopdf', suggesting a lure to trick users into visiting the malicious URL.

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://traffking.ru/strik?utm_term=paul+bunyan+tv+guide+grand+rapids+mn
    • https://cdn-cms.f-static.net/uploads/4455196/normal_5faf0166b1e27.pdf
    • https://feleluxotikuko.weebly.com/uploads/1/3/4/3/134338959/da5d5.pdf
    • https://wubinuju.weebly.com/uploads/1/3/4/6/134642725/gifupi.pdf
    • https://cdn-cms.f-static.net/uploads/4428035/normal_5fb3cc76951d2.pdf
    • https://cdn-cms.f-static.net/uploads/4387219/normal_5fdb1f287ae8a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fc5890b084698658e7db8b9/t/5fd7500fe5ac5828963eeabb/1607946259965/puxivipamodekikesejem.pdf
    • https://s3.amazonaws.com/jagux/tv_guide_amarillo_antenna.pdf
    • https://static1.squarespace.com/static/5fce5f902ebf7d3ac6464c08/t/5fcfe44aec1c613cf6c63682/1607459914767/retro_city_rampage_dx_cheats_ios.pdf
    • https://uploads.strikinglycdn.com/files/8b364586-3fee-43d9-ba52-fa822c6bf7cf/jalofujurinunulisaw.pdf
    • https://uploads.strikinglycdn.com/files/7e4bf3c5-af5b-4c12-9f04-8e8a79f0a463/18666328341.pdf
    • https://s3.amazonaws.com/lonozote/pixel_gun_3d_hack_apk_android.pdf
    • https://static1.squarespace.com/static/5fc31c7792c50b1a1e85f0fa/t/5fc7cbb03fd7ff413f6a77dd/1606929329585/49577350006.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_off0000c5de.bin
658010cd0726f4885ba6aa547ff67c611e4b6ae3248dc672bf857216c3a19585		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC5DE 5580 bytes
font_01_sfnt_off0000d8ca.bin
f0c8e81547344353b3a6d54eaa6b3c5d4c79e564d60172517d82dc4dbadc7337		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD8CA 12132 bytes

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