Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdce3f592f94e5d0…

MALICIOUS

PDF

73.7 KB Created: 2020-12-26 06:57:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: a2a9acc98fa4e4f9bf8a7c1db7351ee6 SHA-1: 53cf98be8ca1de283594d649e7a2cb25ee2f9920 SHA-256: cdce3f592f94e5d0a93215fe13ee24342af59c0047fe7f3b5d279bba69e8b8cc
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as a phishing trojan and a machine learning classifier indicated a high probability of maliciousness. An embedded URL points to a domain associated with game cheats, suggesting a social engineering lure. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic indicate potential for malicious content execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafftec.ru/strik?utm_term=street+racing+syndicate+cheats+xbox PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d13fdb8-2565-45d5-a89d-453331239a8d/51613131684.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/293e1fc7-ac72-4e11-850d-caac595632f6/crash_bandicoot_100_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1d49e27-07dc-4a63-97af-683e421b531c/43789979949.pdfIn PDF document text
    • https://s3.amazonaws.com/satulibaren/give_plural_form_of_agendum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bf5322c-1e4c-444a-be4f-644935e4bba4/65468914582.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/46877987353.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/97786978422.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b721d0d9-b712-4621-b1c5-b8d29eee7548/95608193671.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/475951793.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f84b4ae1-f73a-490b-a5db-9aaf99f7a525/75822896903.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/vizebupusefifavasa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e96ca84-647b-41ec-9724-ef3fcb0aca67/8852348696.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e2b1100-3d37-4dad-98cc-1adc1cd33cbc/a_concise_introduction_to_world_religions_3rd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/086192df-d56c-4f8b-b83d-4c00d877235f/stanford_binet_5_sample_report.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/28366927740.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_off0000e239.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE239 5584 bytes
SHA-256: 8d1a97b1bb79ae341e2f3ba56b47ffe2aac81df1b6bb25b4472df7c1a7a0db16
font_01_sfnt_off0000f53d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF53D 10824 bytes
SHA-256: 299df8e6de169b55ce51e6f30129b1757a4ee6068bda30769211dbcbc1ff9bfc

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