Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6d840b2ee836c0e…

MALICIOUS

PDF

67.7 KB Created: 2020-12-09 01:00:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 1903e7e3173dbf64c41b53de49d64e78 SHA-1: 1684fa2a1972d4ed0abe858475a27720029454c8 SHA-256: f6d840b2ee836c0e8684562cafa07c5176de70edb0c2210356526d9a7bac3a1a
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=keygen+sims+3'. This indicates the document's primary purpose is to lure the user to this malicious site. While no scripts were explicitly extracted, the nature of PDF redirects often involves embedded JavaScript to facilitate the redirection, hence the inclusion of T1059.007.

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://gettraff.ru/strik?utm_term=keygen+sims+3 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370266/normal_5f8ceb638c60e.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/wajufifenoxuj/medical_certificate_form_1a_uttarakhand.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdfddb5147b14804f90714/1606286840593/community_circle_questions_for_middle_school.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/excel_onboarding_checklist_template.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc78e7df784ea513680d1b7/t/5fce312533187724c41be997/1607348519305/boraz.pdfIn PDF document text
    • https://s3.amazonaws.com/susonanezaj/losetetadanade.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/wavelet_analysis_matlab.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/gizovavinajomaju.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e2ed17e7202640ea1bf0/t/5fca241341142a3c4b47239f/1607083030622/kirekixotiv.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd07c5b7a66e04eaf66d1d/1606223813520/wezekuzo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf6b7d7acac6192ab97339/1606380414056/kewalo_basin_harbor_places_to_eat.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/23093380932.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_off0000cf70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF70 4900 bytes
SHA-256: 6ac0176d5a83798855eff43b7562fadb87467edcc3de22518f057e0258de9d4c
font_01_sfnt_off0000e030.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE030 10216 bytes
SHA-256: 7676fc2c056be0dff1eed6be354e8b47a9b3019c3ae82d2f19a7ba5578031ce5

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