Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f574cb6b9ac7df1…

MALICIOUS

PDF

67.3 KB Created: 2020-11-16 23:35:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: e5b11ce03ddc0ba56aaf7946633fa9bb SHA-1: 16cb1e50a3706c8c9f31797a94a2766eb6c63923 SHA-256: 2f574cb6b9ac7df102b9906c14ca317675cee5f4e30ca01200311a4c692972d2
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 'traffking.ru'. This URL is likely used to direct users to a phishing or scam page, as indicated by the appended search query. The ML classifier and ClamAV detection further support the malicious nature of this PDF. No scripts were extracted, but the presence of a malicious URL is sufficient to infer a phishing or redirection attack.

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
  • 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://traffking.ru/123?utm_term=jennette+mccurdy+law+order+svu+youtube In PDF document text
    • https://cdn-cms.f-static.net/uploads/4393190/normal_5fa0c1fc0e715.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427506/normal_5f9815aa9ad4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417405/normal_5fa04acd797fe.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/6b9e6d27-2ad9-462a-9cd2-f2cd8573c59e/75266625781.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23d7faf3-8662-49c2-8690-3a1c0bad6bf0/bohemian_rhapsody_partitura_guitarra_clasica.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a052321-3309-4aa1-ae61-1b164a69f84b/71892586858.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b6c6986-8e1c-4562-900f-ac982f83a7a5/jafojenixosapeka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1dfddd08-f928-4c7a-ae74-59f37089408a/fejesasadalepo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/736ca1da-1225-4b63-8550-27d091517168/movunosijixetowin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c3daa31-6bfc-40c2-9d07-433fb80255ba/6363163990.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e26fe607-95a0-4e8b-a5fb-05b60a0090a2/42253128211.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3fc3e0c-d7b1-4228-b47e-15b5191b974c/xeporudomud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43e5d612-1f34-4d43-a517-796514337f46/zivubifomorokep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c45f533-f646-4d68-8aa9-8b82aeb9cf69/92930706101.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_off0000c903.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC903 5468 bytes
SHA-256: 72fc6a5ee7547e3f0ae43755f246e0665d8a77ebacf7e6bff559bccc64ced5fc
font_01_sfnt_off0000db9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB9E 10816 bytes
SHA-256: 49574f4bbfeacd0e34a37430148e5bc18a6fb8af285f3b132f5c0c46f4f5d19b

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