Malicious PDF — malware analysis report

Static analysis result for SHA-256 08ee04965c3d2632…

MALICIOUS

PDF

40.3 KB Created: 2020-11-01 16:03:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 04ad22d2856b0b247fc908703035369f SHA-1: 087d49bf2d19ac56f7236b7ae0a4d5066b027650 SHA-256: 08ee04965c3d2632a0fdf7f35d6e9b8bc6a962a5dbf1d802e2038130d33167cd
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with at least one identified as a malicious redirector. The document body, though heavily obfuscated, also contains URLs that appear to be part of a link farm strategy. This suggests the primary goal is to redirect users to malicious or SEO-manipulated content, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ttraff.cc/123?keyword=escalation+protocol+destiny+2+key In PDF document text
    • https://gebedevalofibut.weebly.com/uploads/1/3/4/3/134379687/zomatevosires-bumapu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413228/normal_5f9d98789bb93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383467/normal_5f9e22a8b037f.pdfIn PDF document text
    • https://norudajesopoz.weebly.com/uploads/1/3/4/3/134340776/95fcf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392667/normal_5f8fadc158cf8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368954/normal_5f8cc44012977.pdfIn PDF document text
    • https://wabozejitikaz.weebly.com/uploads/1/3/4/4/134495441/1879101.pdfIn PDF document text
    • https://bilewazivabo.weebly.com/uploads/1/3/2/8/132816117/a58d9f7e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383327/normal_5f8bb25448634.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390074/normal_5f8e8cfa6a4e4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000603c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x603C 5324 bytes
SHA-256: 5a56ec1908e99f801b7e37193f3ea0d3aed1a70658ce18f5380d2f765212a0a8
font_01_sfnt_off00007276.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7276 10068 bytes
SHA-256: 9b2a194864813550865214807795421fa929b0d636c80ea47656e9fc9e846a50

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