Malicious PDF — malware analysis report

Static analysis result for SHA-256 c08d26056c9c5bae…

MALICIOUS

PDF

60.8 KB Created: 2020-11-26 08:40:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 35a3048f2e39792fb8ded136747af320 SHA-1: 29917b51202bb226732007f7f145da403d2a6760 SHA-256: c08d26056c9c5bae7c9e090f4400273ee0a20e231dd6f891f7069d6d4f060281
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and 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 0.9996

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://traffmen.ru/strik?utm_term=crosley+stack+o+matic+record+player In PDF document text
    • https://cdn-cms.f-static.net/uploads/4409627/normal_5fa0592c54c13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484993/normal_5fad588cea132.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388156/normal_5fa89a9fafd6d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462351/normal_5fa41ff524344.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369496/normal_5f897126f3ac6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366632/normal_5fad824cad456.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470821/normal_5faa29e5ef59f.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/f0360033-666a-4d6a-96e0-9a651dbd8c9c/program_de_transformat_din_in_wo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8bfb783-48fd-4b0f-ac79-e1287014cae1/bestiario_de_seres_fantasticos_mexicanos.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/52120800006.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/vixalemedijepa.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/1978_oldsmobile_cutlass_supreme_specs.pdfIn PDF document text
    • https://s3.amazonaws.com/fakuguvil/logulewitidun.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_off0000b155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB155 5288 bytes
SHA-256: f99834800fae0ead6a280713a75ed802e74f9e5b6f210abcd9a45a5134725b6a
font_01_sfnt_off0000c344.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC344 10176 bytes
SHA-256: a6bf62311d6447381158d91f7d42f3a3830764a846c60130bad9c250c004e4bf