Malicious PDF — malware analysis report

Static analysis result for SHA-256 5796397420a5cc90…

MALICIOUS

PDF

77.4 KB Created: 2020-11-16 22:07:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: cf8306965ee5a8eb14564439d53cb741 SHA-1: d49e9693e47f255ee21f0e223bb03b7c36efadcc SHA-256: 5796397420a5cc90cf0dedca51d130e371f5bcf9801b72869d1a2f8d9a47d222
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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/123?utm_term=cohesion+and+coupling PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4382629/normal_5fa5a13cb5a4d.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/4f781555-e438-4f2b-acbb-323b25b90889/asus_ve228h_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e424bd20-9e78-4776-9704-3dd204b22885/xudegoguzom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c057431b-6fb7-4067-a805-264b3f98ac0d/33820057238.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82815c74-9ffa-4478-8de4-2f921eeaabb1/julubapegamitejotazijowux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e76554f-8a6d-4e69-a246-646b1634d657/85127575522.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23b3af03-6ad8-4f7b-ae04-800b79d342d5/voluferugogetaladufusut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23f5c5dc-2e8f-45da-8cf5-4881deaaa32d/56661279227.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/381e7e31-1296-4a6e-a843-83490d2a3666/28489208217.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7cbe39ee-c6f8-4f5a-b5ac-ea622836eeb0/75587548054.pdfIn PDF document text
    • https://s3.amazonaws.com/befevifa/pa_dmv_driver_s_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b77963ee-f3ad-4613-a2f3-7db52f0f386e/simbologia_y_formulas_quimicas.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_off0000edf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF0 5144 bytes
SHA-256: 4005105ce2c580ed3040387d0293b55e8a1e45b4d43efecebd012aca53331e9f
font_01_sfnt_off0000ff69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF69 12352 bytes
SHA-256: bc7e9295d2c92f78850fa86a5025d91bf1f109e36fa6c4527012247a475885f5