Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a39c06b3a043e82…

MALICIOUS

PDF

43.5 KB Created: 2020-10-25 20:57:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f43478f49c9cc3942365b58d5d9166f6 SHA-1: 0e643ee0a35383143c9de24a59c104ef7a036b87 SHA-256: 7a39c06b3a043e82093b5be4e1d5cfd572b162fcdb24096db11a64b9d227130d
92 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL 'https://gettraff.ru/aws?keyword=que+es+psicologia+gestalt+pdf' is identified as a malicious redirector. While no scripts were explicitly extracted, the nature of PDF redirects often involves JavaScript to facilitate the redirection, hence T1059.007 is included. The overall confidence is high due to the critical heuristic alert.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 2

  • 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.
  • 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/aws?keyword=que+es+psicologia+gestalt+pdf
    • https://cdn-cms.f-static.net/uploads/4382631/normal_5f8d8908a43f1.pdf
    • https://cdn-cms.f-static.net/uploads/4366374/normal_5f87b7c9c518f.pdf
    • https://cdn-cms.f-static.net/uploads/4367903/normal_5f8757e5757d3.pdf
    • https://cdn-cms.f-static.net/uploads/4376852/normal_5f8da612eeeb6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/c0f916ff-d4b5-4a5b-b791-2431bf8cf03a/legend_of_the_star.pdf
    • https://uploads.strikinglycdn.com/files/73564e10-dcfc-453b-8ad8-f80209f8287f/live_gaming_on_windows_failed_to_ini.pdf
    • https://uploads.strikinglycdn.com/files/7294aae7-c4a9-46d7-b67f-3930297046d1/tekegixunolewimavebip.pdf
    • https://uploads.strikinglycdn.com/files/dce3fda5-09f5-4664-a0e4-d2af0e17c086/jovoranemozivapolejekanek.pdf
    • https://uploads.strikinglycdn.com/files/861092f8-21d2-46e4-9d9f-321a7b555fb5/wimelutigumafep.pdf
    • https://cdn.shopify.com/s/files/1/0485/0876/4321/files/semilivapazaragugor.pdf
    • https://cdn.shopify.com/s/files/1/0501/1089/0138/files/hex_color_picker_android.pdf
    • https://cdn.shopify.com/s/files/1/0497/0879/4013/files/27262801282.pdf
    • https://s3.amazonaws.com/subud/antologia_literaria_5.pdf
    • https://s3.amazonaws.com/sedimeraxufi/loguzesuja.pdf
    • https://s3.amazonaws.com/tuxutedi/assembly_language_programming_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0476/6810/1286/files/winning_eleven_2020_android_games.pdf
    • https://cdn.shopify.com/s/files/1/0438/1288/0544/files/paper_hearts_ali_novak.pdf
    • https://cdn.shopify.com/s/files/1/0497/3166/6072/files/semedodigasuzir.pdf
    • https://s3.amazonaws.com/mijedusovineti/zexoxik.pdf
    • https://s3.amazonaws.com/subud/alphabet_handwriting_practice_worksheets.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008bfd.bin
52debd81a7920fdef7f5618d5b6cf55273c191b8e94a39c8df3f3efe97af6fe2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BFD 5288 bytes

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