Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee192ed014312d2a…

MALICIOUS

PDF

68.0 KB Created: 2020-11-29 10:18:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 85870c59a5b397459135edd67c29db7c SHA-1: d67d6d8aa901415f7f0f31bc85f6940410088ae9 SHA-256: ee192ed014312d2aea8b5bf5b1598f1680508b543e1675cc0a8e277c480a5707
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 lure users into a phishing scheme or download further malicious content. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment of a phishing or trojan delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffking.ru/aws?utm_term=android+simple+chat+application+source+code In PDF document text
    • https://cdn-cms.f-static.net/uploads/4413374/normal_5f9d27d72d985.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476578/normal_5fad32d5d7a6d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369508/normal_5fa2769f1f720.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380070/normal_5fae74dac6758.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369900/normal_5f93e402710e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370525/normal_5fc1d90e605ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384825/normal_5fa99dde3f6a0.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/35de2c9e-ca0d-47bb-958e-eb808d02a9c9/how_to_get_free_movies_on_itunes.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/prince_ali_rescure.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/budesonida_y_formoterol_presentacion.pdfIn PDF document text
    • https://s3.amazonaws.com/jaxesabi/everfi_module_5_financing_higher_education_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jefazaxal/lazikorarinonofojazofetan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e582115f-dd29-4167-b255-567c2b81c64e/75257497374.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/biguwafawisaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6318e02e-f2ff-4160-87e1-4e2692868fa9/kegos.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_off0000cbb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBB7 5300 bytes
SHA-256: 422bfdd6a007a988b435883740c12d21d5539d59469f3212b6ecc17eca10c95b
font_01_sfnt_off0000dd8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD8E 10940 bytes
SHA-256: bf597f2b5624cdec577d1b6696a2e0a7b60ab440d0cf5813cb28ed91ff252c93

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