Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d22913587d3aabd…

MALICIOUS

PDF

67.6 KB Created: 2021-01-06 20:13:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 7546f601d7e92302be51149a4a1ef28e SHA-1: bf4762323c418c84a42240b127a21625bee935b8 SHA-256: 9d22913587d3aabdc70e81fd7c587dcd4c120d378e3910e511bfe13b7ff52401
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, 'https://cctraff.ru/aws?utm_term=android+google+maps+current+location+marker', is likely intended to phish user credentials or deliver a secondary payload. While no scripts were explicitly extracted, the PDF structure and the nature of the embedded link suggest a phishing or redirection attempt, aligning with common malicious PDF tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://cctraff.ru/aws?utm_term=android+google+maps+current+location+marker In PDF document text
    • https://static.s123-cdn-static.com/uploads/4388163/normal_5fdd14a8f4179.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490370/normal_5fd3d23129d20.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366664/normal_5fcb6ece233ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426816/normal_5f9a42ec7adcd.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/91859dfe-9d1c-4fdb-bce3-b46a9da891be/81608799155.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa685ae3-4d8c-4392-8132-ee9331a0e8a0/rifajaxewaroz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7584b48c-5e5a-4c86-b053-4679c6657ac3/29960297928.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab4d9d76-60cd-45d5-88a2-6f94fd64791c/physics_principles_and_problems_chapter_24_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/baritexovopa/bitumen_test_procedure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bae77cc-9357-4c43-a5c2-c4e52e630e41/sijunawuzisige.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20a128c7-3a80-48c2-8c38-27ddfe1e1542/zijoletarixukaveloje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1669c352-671b-4219-bece-9e643133e315/vininokobipelawisojexom.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_off0000cd01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD01 5448 bytes
SHA-256: 61e8201ef724056e8c7ad08121e1b92b0a9c5edac73938d9a6798753e68b1e2e
font_01_sfnt_off0000df73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF73 10016 bytes
SHA-256: f352b78a02bba15aec344f613d158b3c208ff197a86fcfecc1549521f72f75fe

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