Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5fd32032653f248…

MALICIOUS

PDF

66.1 KB Created: 2020-11-25 02:02:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: c10a46f7d5eaa32417cf5f99f9fc47c0 SHA-1: c3d5b700e8d1d79f8424487a3226a8be98ea3b5b SHA-256: d5fd32032653f2484c8dbcb7941fa0d9049b473c34f6236d0203ba2a281a33a7
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that points to a suspicious domain, identified by heuristics as an external URI and flagged by ML classifiers and ClamAV as malicious. The document body, though heavily obfuscated, contains text related to 'lean manufacturing', suggesting a lure to disguise the malicious intent. The presence of an external URI and the overall malicious classification strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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://traffine.ru/strik?utm_term=lean+manufacturing+implementation+in+the+sewing+industry PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4378383/normal_5f9c34b87df4f.pdfIn PDF document text
    • https://tuledekubixa.weebly.com/uploads/1/3/4/7/134722649/963794.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416921/normal_5f9e7b70121db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426679/normal_5f98009ed2708.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/386ece03-ed47-4858-9ba9-ac92470bcaa9/mawowadabufovu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73a92a6e-64db-479d-b0cc-95e84dfb7817/ragnarok_online_quest_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4045519-8c18-4bd4-8682-927054193133/bimusave.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f7e31ef-e084-4b61-ac1f-0918e68671dd/37802752550.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/gamegem_for_android_apk.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_off0000c46d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC46D 5704 bytes
SHA-256: 526d33bedbd23b3c27362b9d42f96e7e52b4d5fc1c71bd7c4aec3bd54ce1b45b
font_01_sfnt_off0000d7c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7C6 10292 bytes
SHA-256: 50b3413fb7306cef17efe7014050cf973fa5e3cf82e8fc328d32ea058017b611