Malicious PDF — malware analysis report

Static analysis result for SHA-256 accde03bbbc3a685…

MALICIOUS

PDF

40.3 KB Created: 2020-11-03 05:16:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: b262370cd5ac09588b171cc0a2b16100 SHA-1: 631f63b867673694d6378d79a0fa5f3bf7b92bcf SHA-256: accde03bbbc3a685072c40f4d2ced8af65994a3cf57a3e250d2005599fcd8c3e
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=unblocked+games+76+2048+cupcakes In PDF document text
    • https://cdn-cms.f-static.net/uploads/4410986/normal_5f95a412b6363.pdfIn PDF document text
    • https://dewubonate.weebly.com/uploads/1/3/4/4/134466502/felotew.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405440/normal_5f9a0fb05b1d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416304/normal_5f9b16e538b91.pdfIn PDF document text
    • https://zatazonikafude.weebly.com/uploads/1/3/4/3/134340422/vaposiwaje.pdfIn PDF document text
    • https://vomediwanuxorat.weebly.com/uploads/1/3/4/3/134327005/zaguzalinesin.pdfIn PDF document text
    • https://xubuvene.weebly.com/uploads/1/3/1/3/131380433/cec2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368243/normal_5f8a05dc4792d.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/6ce0b17c-7124-423f-94b4-a4488c322e9b/pdf_of_chi_square.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5f4565a-9ed6-4176-952d-24b4572b28b5/jeluvovixifuvilejikova.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0301/0468/files/borderlands_2_hacks.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9967/6060/files/planos_workshop_portable_gratis.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_off00005cbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CBB 6284 bytes
SHA-256: 3e7d10b9fb6bacd03830f68667d3df88cb4971d72d8dfd7a35640b61d7137dcf
font_01_sfnt_off00007216.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7216 10080 bytes
SHA-256: 5af209fd1d3d28eef45e1c0c104cf9b86661ef34468b631a141ab4220c06394c