Malicious PDF — malware analysis report

Static analysis result for SHA-256 30f176457b432d89…

MALICIOUS

PDF

31.6 KB Created: 2020-11-05 06:07:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97afd0994264a87423eb191d117a31c0 SHA-1: 9324d0c1ff64c945f304cf91174d3e70925f03d6 SHA-256: 30f176457b432d897ef769d6c147e9621bb5152985058fb7f3b1869b41333d27
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the heuristic firings suggest this document is designed to facilitate further malicious activity, likely through a phishing or malware distribution scheme.

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://ggtraff.ru/strik?keyword=tresanti+wine+cabinet+with+cooler
    • https://rawekawus.weebly.com/uploads/1/3/4/4/134467784/wipefozivimeraf_xowebumopigizig_tuwafamakisiga.pdf
    • https://xikosenazegan.weebly.com/uploads/1/3/0/7/130739601/mutesoriwowina.pdf
    • https://fawefugixizim.weebly.com/uploads/1/3/1/3/131383791/cb033a194.pdf
    • https://cdn-cms.f-static.net/uploads/4382965/normal_5f9a55e0636ba.pdf
    • https://cdn-cms.f-static.net/uploads/4365653/normal_5f8722875c6a1.pdf
    • https://folemazilepi.weebly.com/uploads/1/3/1/1/131164248/kuvidusaronemib.pdf
    • https://cdn-cms.f-static.net/uploads/4404964/normal_5f9e02e8f125e.pdf
    • https://jujizifij.weebly.com/uploads/1/3/4/3/134309807/mumazolumo-xujoturenujo-xanijedovura-jinuje.pdf
    • https://cdn-cms.f-static.net/uploads/4419412/normal_5fa2744856240.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/c250dae8-2b90-4aaf-8997-3150481ef7db/4069755716.pdf
    • https://s3.amazonaws.com/pajukovuxetu/67133703350.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004222.bin
7233961e424ba96d4b1df237bdd08c7dd58fcea77acb7b5f8b9cbd515745ff6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4222 5068 bytes
font_01_sfnt_off00005368.bin
9bc9f179158fa9c4493dda886f811dbf442a8e1acf9574f08dd75ddc7cb1aada		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5368 8984 bytes

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