Malicious PDF — malware analysis report

Static analysis result for SHA-256 45d968925e21f7b0…

MALICIOUS

PDF

98.4 KB Created: 2020-11-17 21:23:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 86e9af4f191a0f0a7d994792792c2b74 SHA-1: 158d21058b214ffc1dbbb2057d8e4086c1ec5c3e SHA-256: 45d968925e21f7b0b64385da7da77d882b67fca9709477127903ce23f8280729
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://traffking.ru/strik?utm_term=cultura+general+de+mexico'. This URL is likely used to lure users into a phishing or malware download site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL is sufficient evidence of 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/strik?utm_term=cultura+general+de+mexico In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369309/normal_5fa44c32590d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366400/normal_5f931f244b2a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502563/normal_5faf7d102a4f4.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/bfe613f5-628b-4ca1-b2fb-0681a6201d49/58502070850.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6105af4-1a55-44ec-a312-1eacbfeb3bcd/luvuxebafoxalavedisukuna.pdfIn PDF document text
    • https://s3.amazonaws.com/fedojigudaj/north_american_reciprocal_list.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/44008701810.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd99691e-6762-4dca-8310-f6d409fa6015/demon_the_fallen_factions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16f45ef0-268a-4631-8736-b425aadeddac/dugikubejigukovik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05039fff-cb64-4d70-851f-4ef8182ca79a/neltharion_s_lair_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de369dec-31f3-47fb-b40b-9db44e2478cf/xefigagivuvepizudamip.pdfIn PDF document text
    • https://s3.amazonaws.com/xotorulu/72581958676.pdfIn PDF document text
    • https://s3.amazonaws.com/widuxade/lenelitiwokegiwefikarexok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cb32f52-9e05-48de-b06a-fc90d9cf2ff3/29236478124.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af274705-69d0-44b1-87f1-f5b806be7d9b/movie_theater_in_secaucus_nj_harmon_meadows.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_off00014133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14133 5052 bytes
SHA-256: c4d81a0d92cd58880e5fd4174b924eb966422d3a78b059879431b8143e113a0a
font_01_sfnt_off0001524c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1524C 13348 bytes
SHA-256: d8981c4c13396bcd7fef865e169800ac37a9d81f843e51ab322708784ab81d2f

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