Malicious PDF — malware analysis report

Static analysis result for SHA-256 d462bc4953fdaabd…

MALICIOUS

PDF

67.0 KB Created: 2020-12-30 12:50:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: b3dcdb8ff63d16c78e42d80f17e5c465 SHA-1: 758ca7f66d772e394cf6377a6e12673107ccd992 SHA-256: d462bc4953fdaabdd95cbae6c932dbaf17443674633b7ce0131fe7d5a5c3ff31
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further confirm its malicious nature. The document body, though heavily obfuscated, suggests a lure related to online games, likely to trick users into visiting the malicious URL.

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=fireboy+and+watergirl+5+elements+online PDF link annotation
    • https://viwomesaw.weebly.com/uploads/1/3/4/4/134472777/4199612.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408858/normal_5fe07c71da2c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470401/normal_5fae8b7232268.pdfIn PDF document text
    • https://gapikedezasede.weebly.com/uploads/1/3/1/4/131438622/6539963.pdfIn PDF document text
    • https://cdn.sqhk.co/jafetegupam/gfnjghc/jibedipirofosoxitazev.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/295778da-9278-4256-9206-d74817f85096/98840035237.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/2629223460.pdfIn PDF document text
    • https://s3.amazonaws.com/jaburirarov/uscg_uniform_manual_m1020.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/capacity_management.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8646f39f-3be3-43e0-a7ae-157c36d80d59/guvizorifirenabudozaka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72cd7385-2aec-4c52-8d84-df54c12d2632/janilajupak.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/91199214952.pdfIn PDF document text
    • https://s3.amazonaws.com/bufexa/11563204574.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_off0000c5cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5CD 5556 bytes
SHA-256: dbc30461a7473ef90b7df80e62990e6d9808aa8e0eed3664fa4fa5ec081a5073
font_01_sfnt_off0000d8b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8B9 11780 bytes
SHA-256: 431260c2675704b4f257eed06059f1b0828e53ebdc4b42fd8c297b8efaf87309