Malicious PDF — malware analysis report

Static analysis result for SHA-256 3638210018ba1a25…

MALICIOUS

PDF

66.3 KB Created: 2020-11-25 15:12:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: c53cb41d31132c60926c24dbc0a40930 SHA-1: 2454566a89247d52c3a6cde7a59f9feacb945a68 SHA-256: 3638210018ba1a251ee65299521ae1eb9dc87637c483cb7c81c8bc1738f79866
96 Risk Score

Malware Insights

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

The file is a PDF document detected as malicious by ClamAV and an ML classifier. It contains an embedded URL pointing to a suspicious domain, trafftec.ru, which is likely used for phishing or to serve a secondary payload. The document body, though heavily obfuscated, suggests a lure related to a 'monologue'. No scripts were extracted, but the PDF structure and malicious detection indicate an attempt to exploit users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9914

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://trafftec.ru/strik?utm_term=gertrude+hamlet+monologue PDF link annotation
    • https://dirigesibujov.weebly.com/uploads/1/3/0/9/130969991/9325561.pdfIn PDF document text
    • https://dofazodasi.weebly.com/uploads/1/3/0/8/130873943/6fc4b4229a63b.pdfIn PDF document text
    • https://fipokotosa.weebly.com/uploads/1/3/4/5/134506619/duvufirejun-poxox-kirur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412768/normal_5f9e5e8d9c6e1.pdfIn PDF document text
    • https://xalipifizipig.weebly.com/uploads/1/3/1/3/131379045/4728980.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/dfadab67-0483-4fa8-a4f5-f852a01126a9/pidevibimimawezopaviroman.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae304ee2-18c9-49f8-800a-93e330b3aaba/lugurifusovomexawakaxined.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/012c1585-2cd4-4b78-aff7-e78559cc1b0a/struggle_to_be_an_all_american_girl.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c995.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC995 5092 bytes
SHA-256: 94d117b400670f010daf62721b77ffc0a00d4e29c73e204ae9119dfd16cf182b
font_01_sfnt_off0000dab9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB9 9968 bytes
SHA-256: d8f4086486cdadecc232963af1b5daf43c8a66191c42d0f96d18b2e56f355251

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