Malicious PDF — malware analysis report

Static analysis result for SHA-256 dff75edbdd01db7a…

MALICIOUS

PDF

69.9 KB Created: 2020-12-26 18:18:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 2ccb202050c9dc01e92eff35e15495fc SHA-1: 148bc5f72bac6905469bacdebc8da8d8e515a9c8 SHA-256: dff75edbdd01db7acf2b51a0ca26a4033b618147d50b59afd0b8da996002d1ad
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, traffking.ru, which is designed to lead users to download potentially unwanted software. The embedded URL is part of a phishing lure, attempting to trick users into downloading a game mod. No scripts were extracted, but the presence of a malicious redirector and the ML classifier's high confidence indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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=download+burger+chef+idle+profit+game+mod+apk In PDF document text
    • https://refapezi.weebly.com/uploads/1/3/4/9/134904673/b478f.pdfIn PDF document text
    • https://cdn.sqhk.co/jekefebiba/2bhcuge/white_noise_generator_program.pdfIn PDF document text
    • https://guzugalaxob.weebly.com/uploads/1/3/4/7/134767263/45900cead5b16ee.pdfIn PDF document text
    • https://cdn.sqhk.co/xulawajikigi/jbMBijf/sibilokudirasuvafopuzo.pdfIn PDF document text
    • https://pigukoziluluz.weebly.com/uploads/1/3/4/8/134896600/e45af96e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390328/normal_5fbabd0ff1051.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vukusa/maniac_mansion_nes_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/set_based_design_safe.pdfIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/fusionner_en_un.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bf4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF4D 5684 bytes
SHA-256: 1f18384db4d0cbf4da92de9773599580a17719d55d4ed9b178c01b6b5154bd70
font_01_sfnt_off0000d288.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD288 3848 bytes
SHA-256: 7b9a04bc63145e540b5bbce2fc354a5d0bd19d1a5d6b30c668449f3b002df66b
font_02_sfnt_off0000e162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE162 11740 bytes
SHA-256: 0609b6a2bb268d3c9a75c2f07ed141da36dbcaef41b83df0e9076110267cac3c