Malicious PDF — malware analysis report

Static analysis result for SHA-256 30846f3130b3d2cb…

MALICIOUS

PDF

64.6 KB Created: 2020-11-25 02:42:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 87d3be85e309dde401d98e8a599430f4 SHA-1: 6f1f6bde760e5f0f2e140a6775bceba89b92efc1 SHA-256: 30846f3130b3d2cb25a9762381b27e169466215d9ae94f30469bd0288340a1a6
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 0.9998

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/strik?utm_term=types+of+busses+in+computer In PDF document text
    • https://cdn-cms.f-static.net/uploads/4387229/normal_5f95db08c49d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390684/normal_5f9e3d893f06e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387703/normal_5f8df130e4efb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/ragokitedusipoladeso.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/nodefibirijajuva.pdfIn PDF document text
    • https://s3.amazonaws.com/padoragog/43558865104.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/13546851753.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/vopiwodemixumizurop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b63d1ab-8e9e-4832-a38d-66454ee1f077/assassins_creed_origins_map_icons.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/76598278905.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/visepaxevobiv.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_off0000be82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE82 5112 bytes
SHA-256: 58dc1d1bb1ab5c99a2fb77c31d697274c792c2caef68b4cd62deab0bdc11e8d3
font_01_sfnt_off0000cfdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFDC 10640 bytes
SHA-256: 4f346e3ab54181cd6529cda0d10f55c8715981bcf4a26b8f5bdc5f3ab1667490