Malicious PDF — malware analysis report

Static analysis result for SHA-256 994f08c6453be448…

MALICIOUS

PDF

85.7 KB Created: 2020-11-13 22:29:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: b456c769e22beb2708e6784f750f6bb3 SHA-1: 29bf2ba036229d243546218e99a613e8a703b09d SHA-256: 994f08c6453be448a9b4b96a94d86c958eaccca9437db76bff467d990cb20529
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffking.ru/strik?utm_term=mhw+living+fossil PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4460055/normal_5fa72295b4aa8.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/zupenafud/65566575954.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/joker_full_movie_123movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69ee0016-dcd7-4d98-9595-103215dadf01/86115237315.pdfIn PDF document text
    • https://s3.amazonaws.com/bevekizadoxuj/introduction_to_live_sound_reinforcement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bcd65d2-0a68-4313-8ffc-f26226dce6a2/45417378393.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07278d13-f130-4c34-af4e-f34412f1a1c6/14209649819.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a68db293-c8e1-4100-a31f-b10a1078e8ad/nojaxefoja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49ae7691-2796-4c5b-9ee1-8031cabc390e/affairscloud_static_gk.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE69 4880 bytes
SHA-256: fff0ac322676cf40fac750e891e98e93764aba00eb08bffe2e5d2ab0fe141625
font_01_sfnt_off00010f34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F34 10728 bytes
SHA-256: 32210d8e7ba3b5dabcab268bf1a5351b87661b010e40ed39173906a8ce6d2347
font_02_sfnt_off00013401.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13401 16808 bytes
SHA-256: fb7b2dc48e1c82fce0487a55f92de73b03104841255ac6944768e5b2092455f1