Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ec93b7ff707ad55…

MALICIOUS

PDF

67.6 KB Created: 2020-11-25 09:32:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 1710decd4830d6e3d590531044f77555 SHA-1: 9199194318e4cb70eeb9377b3b075376ed8af47d SHA-256: 4ec93b7ff707ad55b0e4f4870802dc23e4cc05327cb4bf7315713dcbeed9d05f
154 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 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 0.9998

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://ggtraff.ru/123?utm_term=global+history+judaism+worksheet+answers In PDF document text
    • https://loropigofog.weebly.com/uploads/1/3/4/5/134595907/1783692.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404529/normal_5f9775e6f047e.pdfIn PDF document text
    • https://vafuzetok.weebly.com/uploads/1/3/2/7/132740798/resoferununewav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404753/normal_5f98ff85c82d9.pdfIn PDF document text
    • https://dunidapakepew.weebly.com/uploads/1/3/4/3/134319263/jofagajisunonom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372702/normal_5f8e0393c0430.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420599/normal_5fbc32c4b3f44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389370/normal_5f91cdffcf805.pdfIn PDF document text
    • https://bodupojuribun.weebly.com/uploads/1/3/4/7/134758420/wajisefop-zateg-vuzerog-dobofazet.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/d902d1c9-47ad-4ad5-91bf-da8d8ecc2992/zupopibuke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecc578a6-c5be-4b17-8ea5-dc80ccd0e092/vewul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/689617bb-7a30-4388-bf58-0b24924d83db/99535448465.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/968f0ac3-bc7e-486c-a4f4-86d8fa7370fc/sunizofoditekovul.pdfIn PDF document text
    • https://s3.amazonaws.com/sefepugolupalax/coordinate_grid_pictures_worksheets_free.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_off0000ca54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA54 5572 bytes
SHA-256: 18579f26aa1f598c254af38f50ec8ebf69a2bee6c5b78d78ddc7527c4596d15f
font_01_sfnt_off0000dd30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD30 10780 bytes
SHA-256: 4f619ff1a18a4dc763bfc5e7500417e40aeb99d822448256587bdac2a3bf6e8b

Open this report in the interactive analyzer, or submit your own file for analysis.