Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e6d9cae78882e8d…

MALICIOUS

PDF

261.4 KB Created: 2021-01-06 19:36:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: e6e5139ccbc4b0c772643bf8ca62eb49 SHA-1: 735f357cb80acd0389d9998c74a2089fce411c2a SHA-256: 2e6d9cae78882e8dbba7e2c9bb72e341fbbceb319fa6e55d4163cb6aab8ee6c3
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URL, 'https://traffset.ru/aws?utm_term=lol+akali+top+guide', which is likely used to redirect the user to a phishing or malware download site. The document body, though heavily obfuscated, suggests a lure related to a 'guide'. No scripts were extracted, but the presence of external URIs and the malicious verdict strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9751

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://traffset.ru/aws?utm_term=lol+akali+top+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4376857/normal_5fa8d96f72ad5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475586/normal_5fed763a1abbe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401714/normal_5ff28a6a60cef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372105/normal_5f96b5904d1d1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383807/normal_5fe39e4d35273.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372955/normal_5fa56fd570d4a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393752/normal_5fef4ba7c5368.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485578/normal_5fc8ffc76f76c.pdfIn PDF document text
    • https://wuwoxidip.weebly.com/uploads/1/3/4/4/134492879/kigufuge_nesor_naguvur.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383446/normal_5feb940f7a9b3.pdfIn PDF document text
    • https://tanifovekula.weebly.com/uploads/1/3/1/3/131379991/6095366.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417675/normal_5f956293edc61.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424997/normal_5fec31e242188.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/30b20da6-89c4-4563-b1a1-c225563e7fb9/24028913490.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c25357ab-816f-4e6f-91e5-ef8014edd9d0/pujevikaxetemixegutibigi.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_off0003d056.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3D056 4860 bytes
SHA-256: d282f0ba9abdb547e3173db50a088af3f5e9fc23ff29c36aa94a38918e7db0a9
font_01_sfnt_off0003e0f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3E0F9 11088 bytes
SHA-256: 2ba62d024b6e9680b840123691875c37b9f8bb54fdb6b8cb513063c39d667e21

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