Malicious PDF — malware analysis report

Static analysis result for SHA-256 57929e6e19ff9e92…

MALICIOUS

PDF

65.6 KB Created: 2020-12-23 03:52:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: a0384c97f3a4afa8d927504d7d0f529d SHA-1: 8b80e07730dd004247fa710d2b50d7942c83f067 SHA-256: 57929e6e19ff9e92d0c3780ea8ddc1e89c9a7cd3ffb8bb06c4b8b3ad515c88f7
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'trafftec.ru', which is likely the destination for a phishing or malware download attempt. The document body, though heavily obfuscated, contains text related to 'Infinite tiles be fast' and the wkhtmltopdf application, suggesting a lure to a service or product.

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://trafftec.ru/strik?utm_term=infinite+tiles+be+fast PDF link annotation
    • https://wufodiwefoveve.weebly.com/uploads/1/3/4/8/134891768/pabezusofij_wiwuvux_fotijinike.pdfIn PDF document text
    • https://kofezewi.weebly.com/uploads/1/3/2/3/132302944/7899122.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459468/normal_5fa52b720231f.pdfIn PDF document text
    • https://bavejojonosepes.weebly.com/uploads/1/3/1/3/131380601/6279566.pdfIn PDF document text
    • https://sekikeke.weebly.com/uploads/1/3/4/7/134739811/turebuzadidud-kewiwulojiso-jugazomurerojej-zevin.pdfIn PDF document text
    • https://denibemexe.weebly.com/uploads/1/3/4/5/134597338/2574695.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gozifep/38459346153.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b065b55-4f9e-46d5-96ea-b6adfb9cdea3/samuwelal.pdfIn PDF document text
    • https://s3.amazonaws.com/jamuluvuvava/22996854894.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/vegetable_salad_recipes.pdfIn PDF document text
    • https://s3.amazonaws.com/naramuro/gawegibulavetom.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/bord_and_pillar_method.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6a388fe-53fb-42bb-9399-a52549e7b176/refewotadedezuw.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe0026eaf37e3b64623217/1606287399373/bobanuvesuna.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/lafuxe.pdfIn PDF document text
    • https://s3.amazonaws.com/nijudow/xixozobokelazalenizuz.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_off0000c476.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC476 4740 bytes
SHA-256: 30352fa240d3fecc6da1b308cee8b1b10d2f311ff96ad3faacd953745a9a2396
font_01_sfnt_off0000d4ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4AC 11212 bytes
SHA-256: 7131b6305751a6d5ade6983ea66faa83f459fd8795990c045ecc42ad443ef6ad

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