Malicious PDF — malware analysis report

Static analysis result for SHA-256 f72810d58201713d…

MALICIOUS

PDF

71.3 KB Created: 2020-11-20 03:43:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 548fb64be64222779e4f38432c4ffdb9 SHA-1: 8311f6bd82e7c6a328e0db372c77c26aa627035c SHA-256: f72810d58201713d722d33b7745719b5242bea319d6868b6d476940069505e79
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffine.ru/123?utm_term=hot+wheels+deora'. Additionally, a machine learning model and ClamAV detection strongly indicate maliciousness. The presence of embedded URLs and the nature of the redirector suggest this file is designed to lure users to malicious infrastructure, likely for phishing or to download further malware.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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=hot+wheels+deora In PDF document text
    • https://jemiwuwavaza.weebly.com/uploads/1/3/0/8/130814288/50eebe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386366/normal_5fb715cb16dc0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383132/normal_5f911b46b54e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390385/normal_5f93f40c76655.pdfIn PDF document text
    • https://ragivigelogupow.weebly.com/uploads/1/3/4/5/134525503/kunasow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376602/normal_5f8bbe49179ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391340/normal_5f8e84f8c3008.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382773/normal_5f99393b15424.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/a729629e-0eda-4581-8bd9-8efb359b08a1/wiwokezovalebon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/357cabf7-e072-470c-b530-124b999b1bf6/datepugatanu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61832113-09ab-4b4c-bf22-e8cf04ee1ec7/lozetivapesokevogititeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00676054-ee07-42be-abc4-ae484ad283a7/xavuterakagudugokikumo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63e2eff6-cff0-496d-a7af-9253576934d1/free_download_the_boss_baby_full_movie_in_hindi_hd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aabe1559-6fa9-4d71-8e21-b60e1ff821eb/instituciones_que_protegen_los_derechos_humanos_en_el_mundo.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_off0000d8e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8E7 4964 bytes
SHA-256: aa4ba38122a03ba1f0ee11049861477cf536800b069e142ccd422ed0226d9595
font_01_sfnt_off0000e9ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9CA 11724 bytes
SHA-256: d031f2a98079a0600b9b74938ee5d603b5668eb2702d5678e310a4fd7c70bd12

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