Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0ee9b12a3632cb5…

MALICIOUS

PDF

67.6 KB Created: 2020-11-13 23:19:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 2915d80a2e43a0110387eaf0bfccb4be SHA-1: 76ef19e1891ec822d0ed5a808ea8160f036899fd SHA-256: b0ee9b12a3632cb5d5fed4a956bf5ab02cc0023b9131c297ae4e70b782088e1a
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://gettraff.ru/strik?utm_term=nombre+de+amarjit+significado'. This URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://gettraff.ru/strik?utm_term=nombre+de+amarjit+significado In PDF document text
    • https://cdn-cms.f-static.net/uploads/4388046/normal_5fa2155857a3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415950/normal_5fa04de52ff42.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371010/normal_5f88812ec2685.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375206/normal_5f9f30bd95d81.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420237/normal_5fa0990af143b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374517/normal_5faac39a6190c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366395/normal_5f871c0bba8ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393026/normal_5f94e9c108f6f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/fawugobutosetugufawopozog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a284b2d-0a94-4878-922a-355752c06461/fizorepo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3bcd5c4-7be0-4df2-b8cb-165d465551a7/bomexevuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73129576-fcea-4da6-99dc-04d0ec76bd93/sevewizuvogirunajoje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10e8002e-35da-458e-8bbf-494940ece9d4/puzavaxetejobugas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1750218f-000d-4f10-8904-bc8e1699a468/hcmc_medical_records_request.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/jufukigavasasa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/440d3b95-4f92-4714-a8ba-fcfb76cea729/36218900864.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_off0000cb05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB05 5496 bytes
SHA-256: 902c9f31123a7523b2ecbd4761a1476a738506d493044b5a7c535ace0456a459
font_01_sfnt_off0000dda8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDA8 11216 bytes
SHA-256: 00d394a897566cb20aaaaadb1d0df64238100e362560ad6e3b2eb79fa3e71e97

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