Malicious PDF — malware analysis report

Static analysis result for SHA-256 3088cffe84e0701e…

MALICIOUS

PDF

71.6 KB Created: 2020-12-02 02:29:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 319115562cacc2752905d2c41498cf19 SHA-1: 130e6f175960eedcc6f0239ec48779af52597e00 SHA-256: 3088cffe84e0701e04d4fb251847f2db646bc3f90365348eeb25dbf243de9a48
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious external domain, trafftec.ru. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the presence of the external URI suggests an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafftec.ru/strik?utm_term=talks+bad+about+synonyms
    • https://cdn-cms.f-static.net/uploads/4393186/normal_5f929e4e6d2e0.pdf
    • https://cdn-cms.f-static.net/uploads/4370054/normal_5fb7495545a91.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tasufagijaremo/kawamupewibavigutefexid.pdf
    • https://s3.amazonaws.com/zonivezada/vofokerowofunozev.pdf
    • https://uploads.strikinglycdn.com/files/8be95e14-bc38-40b6-994e-9852d67ef52c/dakonupi.pdf
    • https://s3.amazonaws.com/mibiwivanetuj/64167924879.pdf
    • https://uploads.strikinglycdn.com/files/1a145ebb-9277-4fac-9a73-2a9d0cf34ea0/radodosu.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe3344e6d49a06bb5c11c1/1606300485416/the_war_of_art_audiobook_free_download_mp3.pdf
    • https://static1.squarespace.com/static/5fc2b246df132613bbc941e4/t/5fc5a2d8bc819f1cf49af7bf/1606787801880/x_men_apocalypse_full_movie_english.pdf
    • https://s3.amazonaws.com/zikeko/eeoc_intake_questionnaire_form.pdf
    • https://s3.amazonaws.com/bisegilupuf/zipomitokulo.pdf
    • https://uploads.strikinglycdn.com/files/eba28f3c-22be-4bb4-b4bc-8f5f2d155caf/the_art_of_being_human_summary.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da64.bin
72a1dc816bb410d16ce0bb795d081d006afdd56e429b904d6839c6032cff052c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA64 5132 bytes
font_01_sfnt_off0000ebce.bin
17edb89b3b0c9928538532f8dd3bd11b44a970dc3a0d9bad5a3990b64e425884		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBCE 11364 bytes

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