Malicious PDF — malware analysis report

Static analysis result for SHA-256 608708177d0ab4a8…

MALICIOUS

PDF

48.2 KB Created: 2020-10-26 11:11:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 4c49d9e9942ce853029946355de8535a SHA-1: 9dd139df91ea15aba3e82178e8ca018919884c38 SHA-256: 608708177d0ab4a8383f21b3cc2a52713d99753e2bb8bff4dce4bb9d893dcfbf
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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://cctraff.ru/strik?keyword=2013+audi+q5+premium+plus+owners+man In PDF document text
    • https://pewovorawegoxuv.weebly.com/uploads/1/3/4/3/134351704/gugagaxejetuf-pepavekexam-dobes-wiveju.pdfIn PDF document text
    • https://gezeteweni.weebly.com/uploads/1/3/4/0/134040803/xifumemino.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409413/normal_5f94e09306e7a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365562/normal_5f8720c9d2050.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/1/0497/3897/3345/files/contract_law_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6472/1562/files/14033252595.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2453/1101/files/96580900142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/0925/3791/files/how_do_you_address_an_emperor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/6958/5591/files/12422352339.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad59e8a3-6b94-42bb-93e3-3c0537be71e0/88434990143.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2ff4564-952a-4cfe-bb1b-b04b1e510523/69547308560.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57e6c533-b50d-454c-a555-3675296cfeec/bazazonogonaji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1752b1e0-0bf3-4d47-a040-9b98f9069fa8/34933404346.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ca0b61b-e158-4282-8c4f-7f2af15f4ef1/sowopelizemusunokilijoso.pdfIn PDF document text
    • https://s3.amazonaws.com/degisapemifa/40010546572.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/arduino_simulation_with_proteus.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/tratamiento_absceso_perianal.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/zejatuxemiku.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_off000079eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79EB 5840 bytes
SHA-256: 011f29f0802609b3ccff91d2bd2f02a7e8dde766b6a9c5dd28d481c626f43c7a
font_01_sfnt_off00008dbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DBD 11504 bytes
SHA-256: e2689b082965999a64ca6ab535a97ab0dec017d365e21d76879d8a51fcf09529

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