Malicious PDF — malware analysis report

Static analysis result for SHA-256 4414da235149b360…

MALICIOUS

PDF

79.1 KB Created: 2020-12-27 06:39:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01ccbb10782cf7f7dff854e500be4f52 SHA-1: 79225eb7780e94816d614a0100c29481d498d668 SHA-256: 4414da235149b3602ed1cbf1350ffffbaaa63bf94681d3b474da751b8de23ccb
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 URL pointing to 'trafffe.ru', which is likely used for phishing or to download a secondary payload. The document body, though heavily obfuscated, contains text related to 'stadium seating', suggesting a lure.

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://trafffe.ru/123?utm_term=five+county+stadium+seating
    • https://cdn-cms.f-static.net/uploads/4417815/normal_5f9b03f77aa94.pdf
    • https://cdn-cms.f-static.net/uploads/4376611/normal_5f8b40da852e3.pdf
    • https://cdn-cms.f-static.net/uploads/4413223/normal_5fdc6fcf55d6c.pdf
    • https://cdn.sqhk.co/karapazepot/Lv2Riew/wetaxuvizuvijobuw.pdf
    • https://cdn-cms.f-static.net/uploads/4382190/normal_5fa8d8ec01365.pdf
    • https://cdn.sqhk.co/xiteduva/ihcyjjp/csr_racing_free_download_for_pc.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/07aac1f7-5d43-4728-b707-3485f1f45283/atlantic_is_a_sea_of_bones.pdf
    • https://uploads.strikinglycdn.com/files/9c889798-4d73-4325-aa4a-c7db91fc4800/tadex.pdf
    • https://uploads.strikinglycdn.com/files/44a2a056-0794-4aab-a332-331591b6c6c5/pusibes.pdf
    • https://s3.amazonaws.com/bevarolimesale/jotutodomun.pdf
    • https://s3.amazonaws.com/xonaxevetaf/lego_minifigures_disney_series_2_guide.pdf
    • https://uploads.strikinglycdn.com/files/b9f97449-40f7-4541-aaea-26962eff5d57/fantasy_bard_images.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f733.bin
534bdcd469a58a86222bec868c937c3dfe316e5db480c63e504b803119124d2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF733 5248 bytes
font_01_sfnt_off00010914.bin
aeb47c5d998af1ce21750cb99cf07dce3d754b468d43fbac2ef53a5402f31e78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10914 11436 bytes

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