Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cb696349cb4cb9b…

MALICIOUS

PDF

39.7 KB Created: 2020-10-07 16:47:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: de4347ae033c98095c562ca4c35e1ecd SHA-1: 2cfe7e5a42e2f09dc070e4536468b543e4a958d4 SHA-256: 9cb696349cb4cb9be1cf263a61b6ba69e4f0d50e6a11c6d75c9c7412e226a34d
94 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://ggtraff.ru/pify?keyword=parliamentary+procedure+script+ffa'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the redirector strongly suggest an attempt to lure the user to a malicious site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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://ggtraff.ru/pify?keyword=parliamentary+procedure+script+ffa In PDF document text
    • http://files.scvexercise.com/uploads/1/3/1/6/131637316/vikamodoko_pixeris.pdfIn PDF document text
    • http://files.twistedoakandco.com/uploads/1/3/1/4/131438843/nuzegabotezuma-sasoj-bijezasogep.pdfIn PDF document text
    • http://peluwera.twothreefivenine.com/uploads/1/3/1/4/131406686/nupasanavipusudikiva.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/1296/3482/files/athearn_blue_box_handrails.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7015/5680/files/xupedipul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9581/8404/files/lekomevezesebitomuxefu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1520/0158/files/kezeguzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4142/1474/files/dragon_reference_sheet_deviantart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17d5d3d8-f34a-4851-a2bd-db38e2ba2782/tejom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8714b53-8f5b-41e7-b614-9fc79c07af57/3869289669.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b934fffb-759f-461d-a687-b7e44420e8a8/65762802283.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f42f50d-710e-4dff-88ab-114e6620ea71/4930227826.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9befbd5-399a-4bc7-b673-87d3f8301fb3/99696759388.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c7c6c54-b8f7-4a01-9857-02fe17c055b5/51746427663.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/759d58f0-1f99-4297-bead-a8083a0b3be3/78579455394.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_off00005a12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A12 5404 bytes
SHA-256: ca243769f4865a2746accb4665ea500f651292d67e8b75e1346762c661a02301
font_01_sfnt_off00006c65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C65 10412 bytes
SHA-256: 0f7cf7165c441b525eb4f07d529fc75bfcc1147aa25c0dd42eb2af4b8fa8478e

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