Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bd5286b565d4baf…

MALICIOUS

PDF

69.1 KB Created: 2020-11-10 21:11:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e33b60a3308f665baaeb1e1963365ea0 SHA-1: d8027503fbc9dbe2ba29e0fe6392603d50f0d91a SHA-256: 6bd5286b565d4bafc82cf09b600bcec117b0af68c2a95e3521c0e3667bdb51cc
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 0.9997

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://gettraff.ru/strik?keyword=blue+dragon+slayer+guide+osrs In PDF document text
    • https://cdn-cms.f-static.net/uploads/4418791/normal_5fa1e75ee648c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393186/normal_5fa3213e72305.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/111c7ae7-bcf7-4894-a9a0-58edc1a9a4bc/43099382346.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/sony_wega_tv_36_inch_weight.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6abef5b-1736-4ca5-8888-cc1fab627063/fuwesijalozaxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df0da60b-e8d8-4b12-a123-f560c7599d2f/80409484412.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ddb57c2a-0dd7-4e2b-a63d-15594656c49b/83300469052.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83be95d3-754d-4a48-97a9-b85ae8796bed/94914895263.pdfIn PDF document text
    • https://s3.amazonaws.com/petikamov/xomefiluvav.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/69398255682.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/tijawuvipefulojimukuse.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/sejarah_agama_islam_di_indonesia.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_off0000ca88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA88 5144 bytes
SHA-256: d9f7459c0514843a25ff9b58caaea0357310697d4c6ac1f0ea9d89015cf4a58f
font_01_sfnt_off0000dc20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC20 13972 bytes
SHA-256: a319fd9f1e9a26e72ad85f63eeb4fa473fbf57715e1bc4b959de85a0181a9308