Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f58eaa541d547ec…

MALICIOUS

PDF

42.2 KB Created: 2020-11-02 02:54:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 012d14ef0181fe71a4c077e52b5a283f SHA-1: c8e694717aa171eff1855586d43fd9636cb126ca SHA-256: 5f58eaa541d547ecbc57079c72e4d961b295762322cd8f3215b83ab47e0fd875
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic indicating it links to known malicious redirector infrastructure. The embedded URL, 'https://gettraff.ru/wb?keyword=see%20private%20instagram%20photos', is likely used to lure users into clicking a link that leads to a phishing page or malware download. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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://gettraff.ru/wb?keyword=see%20private%20instagram%20photos In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369311/normal_5f89d6ab8088e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418575/normal_5f9f55b4579a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367640/normal_5f90a4b60e4a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406456/normal_5f93f1517a731.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416672/normal_5f94bf68cf5a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412606/normal_5f9dd66251abe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377120/normal_5f9d8ac46329a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373519/normal_5f8ccfa6f2b10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369922/normal_5f8e8ef263995.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369486/normal_5f887fd22179b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380073/normal_5f988150aa2ab.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/c37510fd-416e-4c6b-827e-fd6562e93bb5/way_of_the_wicked_pathfinder_players_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vibove/4523238173.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_off000064e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64E4 5364 bytes
SHA-256: f5200befdb3847298259eb5ec16d19421ceed948ff903bed52e8167e6c6bc474
font_01_sfnt_off00007701.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7701 10932 bytes
SHA-256: b65cd5368d32ad6cc692220e74f81a5084d089a507a61e5c2bf2472f866e01e1