Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eed8293dc77313f…

MALICIOUS

PDF

66.6 KB Created: 2020-12-16 19:17:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: d3556bc3c60e9ad8a0e416582b7f757b SHA-1: e8e0749a6876a6519810e2b77671a6e98e32fccf SHA-256: 2eed8293dc77313f4e00b56007aa02309f022a683a9853413b812ac89072fd61
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/123?utm_term=atmosphere+unit+study+guide'. This indicates the document's primary purpose is to lure the user to this malicious site. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the nature of the redirector suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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/123?utm_term=atmosphere+unit+study+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4416792/normal_5fa65eb638d05.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370740/normal_5fcb9487b208e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385216/normal_5fb7a0382e4f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378619/normal_5fa71bc39c12f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457302/normal_5fada973dc443.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/kabisebax/15777873041.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2814ec89e1c4b8fc8ad60/t/5fcb4a84a0b42e3566a589db/1607158404666/38816673632.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfd6e2c6d96458361c2338/t/5fc12166145a8629dcd95e6b/1606492518816/posterior_triangle_of_the_neck_slideshare.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc11ff5ea4a794d5646682f/t/5fcb299d9cf56e0e8b0d3f63/1607149982164/pearl_shopping_in_hyderabad.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/jeniworuvazusox.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/difference_between_deductive_and_inductive_research.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e80068612547ed5e2b99/t/5fc229d1fa04221c7168621b/1606560209657/biology_genetics_study_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/632941d4-1627-4ac6-b41b-c26891e6b68b/lawijimuxabegafixexumog.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1983ee2fce462bc90e0df/t/5fceeba705f6f278074c4a02/1607396264944/trials_frontier_data_cube_rocky_desert.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_off0000c9fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9FC 5224 bytes
SHA-256: 96b3872c9eeba619268f8e961dfd74c0a8c41f7cac92b09efcacef9167ac5f41
font_01_sfnt_off0000db9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB9F 10064 bytes
SHA-256: e1441d297d7298dacbbfba0e066ffa39606180f8287fb012c9e6bdeb0f1a5bda

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