Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec200ede1e9ddd77…

MALICIOUS

PDF

44.4 KB Created: 2020-10-29 05:28:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: d539d7af887406a1f52d50298176d4bb SHA-1: 2cc278a6df544826529dd95feef247578b656d13 SHA-256: ec200ede1e9ddd7781f0ad8d5bed0cbb3cc15ad6cbe43a431e3ddf09e7198288
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure, specifically pointing to 'ggtraff.ru'. The document body, though heavily obfuscated, contains a reference to the same URL. This suggests the primary purpose is to redirect users to malicious content, likely 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://ggtraff.ru/123?keyword=project+management+maturity+assessment+template In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370529/normal_5f89534489fdc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404757/normal_5f94d7450143e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385230/normal_5f9636ce53a2b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409243/normal_5f9a242f77827.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373788/normal_5f9764f56486f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388162/normal_5f92dbb38a4b7.pdfIn PDF document text
    • https://jimigafekalese.weebly.com/uploads/1/3/1/4/131407537/790854.pdfIn PDF document text
    • https://babinekisifuve.weebly.com/uploads/1/3/2/6/132696104/9156078.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366381/normal_5f8b4433abc9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379731/normal_5f8f4d652a3aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417534/normal_5f9902cd97a36.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389084/normal_5f8e7baae7546.pdfIn PDF document text
    • https://rudofodirofebas.weebly.com/uploads/1/3/0/7/130739781/955d3b1d.pdfIn PDF document text
    • https://zadumeredevasax.weebly.com/uploads/1/3/1/4/131453870/riburu.pdfIn PDF document text
    • https://belujewirozem.weebly.com/uploads/1/3/2/6/132681559/3315478.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/9972/8293/files/i_am_watching_you_book_summary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9095/9264/files/19459850319.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2089/1798/files/congo_fever_in_gujarati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7204/4187/files/divisions_of_the_bible_worksheet.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_off00006cd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD5 5432 bytes
SHA-256: fc88e48f1e6e6b7e82116a8c75391a3a353d81acf5c15b91961157cce86d58e1
font_01_sfnt_off00007f44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F44 11000 bytes
SHA-256: d6ae866a3d41be402632bc7d06b0d5784de305e0663e054017e9e4499786226a

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