Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8d83714eed63457…

MALICIOUS

PDF

71.1 KB Created: 2020-12-19 15:28:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 7f980581a7d5af25096cd5cc58257267 SHA-1: 9280ce44260f0a77960d97cee08a1c4c9ed9b719 SHA-256: c8d83714eed63457ed330c6d0be5a6eec6017e8397a88aa8a044626e753fcf92
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'traffine.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be a lure related to furniture search terms, suggesting a phishing attempt to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/123?utm_term=cherry+house+furniture+louisville+kentucky PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4492275/normal_5fade0cd22c74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454299/normal_5fbc733c402b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380528/normal_5f900d281213c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452392/normal_5fd3aa3c09612.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378848/normal_5fce9f6d3608b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422373/normal_5fad231e2f133.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366305/normal_5fc204316aafd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384308/normal_5f8c9351aafcb.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/memul/gowemetuponebuzote.pdfIn PDF document text
    • https://s3.amazonaws.com/wusigipufuvowix/29565478965.pdfIn PDF document text
    • https://s3.amazonaws.com/xelimewat/battlefield_1_games.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/clearview_rc_flight_simulator.pdfIn PDF document text
    • https://s3.amazonaws.com/nafibanefexex/969601454.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/aashayein_lyrics.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_off0000d6c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6C3 4892 bytes
SHA-256: 9013b0669f92a8690bd20edec2401a6f2ac76b3771285d09b129f0254aae7521
font_01_sfnt_off0000e772.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE772 11336 bytes
SHA-256: cab10261c43e49483d3dbf89efd36010ecebefe4634f085046a92e8b9acb577e