Malicious PDF — malware analysis report

Static analysis result for SHA-256 86705fc575f68bae…

MALICIOUS

PDF

84.3 KB Created: 2021-01-09 22:35:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: e6679315291d4a1c98424c7f5e1b6c03 SHA-1: 81f58b5b8faa7599aa21519ac01ffcae61fd5541 SHA-256: 86705fc575f68bae30e23a9d54d51fbc7aceb5a9f7c3ceee1d1a70394d1ee4af
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, with heuristics indicating the presence of external URIs. The document body, though partially obfuscated, contains text related to game downloads, suggesting a lure. The embedded URL 'https://traffking.ru/aws?utm_term=tekken+3+game+install+now' likely serves as a redirect to malicious content or a phishing page.

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://traffking.ru/aws?utm_term=tekken+3+game+install+now PDF link annotation
    • https://cdn.sqhk.co/nuroteditu/je46ghO/free_beat_making_apps_for_ipad.pdfIn PDF document text
    • https://cdn.sqhk.co/jawutuwek/gfrkjbU/96683445408.pdfIn PDF document text
    • https://cdn.sqhk.co/zetikitor/LdQKji1/sokifanalulisi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413978/normal_5fcbf6ffeb1a6.pdfIn PDF document text
    • https://cdn.sqhk.co/zejegure/jhhtmih/panda_run_mod_apk_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/vedanoderifu/gfqMeih/66117977563.pdfIn PDF document text
    • https://cdn.sqhk.co/xinulezebi/6qjepW4/mabulutatejanelubo.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/jolituzoji/apk_format_means.pdfIn PDF document text
    • https://s3.amazonaws.com/rudelazifizuvo/77241690736.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/48390571253.pdfIn PDF document text
    • https://s3.amazonaws.com/dutuzanob/cloud_printable_template.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010e84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E84 5180 bytes
SHA-256: c506e344c7fd76b355148ddc2d469f13ecfffca8b1bae2cf73ca3456aee8f25f
font_01_sfnt_off0001202e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1202E 10628 bytes
SHA-256: 63fb5f7edff70edcf5186710674b4edc07a6960729aa436105eee6859f4d8b23

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