Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e35d8e82bec9614…

MALICIOUS

PDF

71.5 KB Created: 2021-01-06 06:12:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d87209169f7428c5979550a0e624f4ed SHA-1: 7f522c5485e68c1359c97844f06635cd3dc50e5c SHA-256: 5e35d8e82bec961459ae50310f501f1f25d1240d25d3d4757776f8b79e4088a5
96 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating the presence of external URIs and embedded URLs, with one URL pointing to 'traffking.ru'. The ML classifier and ClamAV detection strongly suggest malicious intent, classifying it as a phishing trojan. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing lure designed to redirect users to malicious content.

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/aws?utm_term=crude+oil+inventories+report
    • https://cdn.sqhk.co/fogobewataja/jiHjfDF/odyssey_turbo_runner_quad_drone.pdf
    • https://cdn.sqhk.co/takularozo/SsRghYI/actually_buys_like_a_boss_meme_template.pdf
    • https://cdn-cms.f-static.net/uploads/4478655/normal_5fc1ea4acbeb9.pdf
    • https://cdn.sqhk.co/jawubibegeba/U6tMkJs/mini_camera_drone_price_in_bd.pdf
    • https://cdn-cms.f-static.net/uploads/4387815/normal_5f950955a0ba9.pdf
    • https://cdn.sqhk.co/lojumisebu/Mshjiif/19974160671.pdf
    • https://cdn.sqhk.co/pajerelo/bYWlQgf/rudefotetadijutibin.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/daxemo/84292499307.pdf
    • https://s3.amazonaws.com/bugutaj/linaxumewegibu.pdf
    • https://uploads.strikinglycdn.com/files/980431a2-0965-4d70-895e-6725b6e9ec61/97974294469.pdf
    • https://s3.amazonaws.com/jivamubug/zexumutaguzunodovoweg.pdf
    • https://s3.amazonaws.com/bajapovogam/material_balance_chemical_engineering_book.pdf
    • https://s3.amazonaws.com/fajixe/35587997739.pdf
    • https://uploads.strikinglycdn.com/files/a68b5ffe-4fa5-4ac1-b6c0-89969a90b5f9/61502741721.pdf
    • https://s3.amazonaws.com/gajakelegeza/afiliacion_al_banco_bicentenario_nueva_plataforma.pdf
    • https://uploads.strikinglycdn.com/files/94af3c43-80ea-4f21-9929-9f1cfeaef353/kohler_toilet_fill_valve_sticks.pdf
    • https://uploads.strikinglycdn.com/files/4a973da3-0bda-48c5-b86a-4a9cfa8910bf/47181725457.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_off0000dc20.bin
18b7b720896d8a8029dbfd4b91c742ff5f926eb9c07e7bc586692165bf88b451
pdf-font-stream PDF embedded font (sfnt) at offset 0xDC20 4708 bytes
font_01_sfnt_off0000ec32.bin
9ff4b05a90687671e036811c1f26eeb0a120c659e73c0e6be2cc60b8de68e155
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC32 10796 bytes