Malicious PDF — malware analysis report

Static analysis result for SHA-256 29eb17a36583ea2e…

MALICIOUS

PDF

44.2 KB Created: 2020-11-03 19:57:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e41987090cb785a9f3bd37d94ff9c5c4 SHA-1: d364bf92fdafe4dff50acd5ae4598b20b647ea47 SHA-256: 29eb17a36583ea2e5bf9a78989006e003f89e59cb0914e216405d55af4102e60
94 Risk Score

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://gettraff.ru/strik?keyword=barnett+ghost+350+owners+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367279/normal_5f993458ea5c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370064/normal_5f8a95dbdc8af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374203/normal_5f9f3f432bf28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384310/normal_5f9ce529d7333.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a19e366-2079-4891-a39c-3eb40b183e3d/como_sacar_el_baricentro_de_un_trian.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/882978ee-0da8-4085-9cb3-04201d48d6ec/91894648633.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ee05388-0003-4052-b3be-913e633b28bc/hack_gu_rebirth_walkthrough.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/27071407616.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/zamam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/742c07e7-6e43-4b9a-b38d-e5f63ab80420/letter_of_introduction_for_teaching.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/ccie_collaboration_study_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95473505-fe1b-4c17-8ffe-312167f6da6f/gta_4_android_mod_apk_download.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_off00006c99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C99 5668 bytes
SHA-256: ef4afba8ad2ceeca606e3c5796a94ab0a4b3c7c8b4e2590ee13a8353b1eac0f1
font_01_sfnt_off00007fcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FCB 10644 bytes
SHA-256: c499f494bf562860c1328588c5419456f7b63bda14fb065ea66e18120209abbe