Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bfcadf447f3236f…

MALICIOUS

PDF

69.1 KB Created: 2020-12-09 00:36:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4edf6db10eb8086015683ba855e2e813 SHA-1: 72de5bea23f92d63d8b1a71c2425a5be9398efd8 SHA-256: 3bfcadf447f3236ff28cb94080e1d4075c38afea1c00969ba6e0252cbe50dee6
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to 'traffking.ru', which is highly suspicious and likely part of a phishing or scam campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of external URIs within a PDF, coupled with high detection scores, suggests it's designed to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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=battle+for+skull+pass+goblins
    • https://rejajosafijaba.weebly.com/uploads/1/3/4/5/134590771/1022260.pdf
    • https://piborubaladedos.weebly.com/uploads/1/3/4/7/134764427/6fb29.pdf
    • https://tabogivazosepa.weebly.com/uploads/1/3/1/8/131871767/04cf1d7e2763c2.pdf
    • https://cdn-cms.f-static.net/uploads/4366302/normal_5f8749ece2b14.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tezude/gibela_bursary_application_form.pdf
    • https://uploads.strikinglycdn.com/files/c28aba8a-4c41-4600-ae04-3754a413fa6a/west_islip_school_district_employment.pdf
    • https://uploads.strikinglycdn.com/files/096d4bf2-db8b-49e3-bf3c-0730c92f32b5/rotation_vs_revolution_diagram.pdf
    • https://s3.amazonaws.com/fekaduvopigab/62700614620.pdf
    • https://uploads.strikinglycdn.com/files/76ce2be4-1ee5-4e2e-874a-68bbcf75521a/83472770004.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_off0000d41b.bin
d0b756dcba9574deb3e591ecb25871f56f8ed72a554a687063f49286ec782def		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD41B 5320 bytes
font_01_sfnt_off0000e64a.bin
2fccc988c32091075ea07805992deda2276aea060375e3c0226392df4ed0d928		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE64A 9892 bytes

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