Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f00a691cad424e9…

MALICIOUS

PDF

38.5 KB Created: 2020-11-02 22:18:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 1de0837711b7a4d36899180e72227728 SHA-1: d4489d671fc367875a6a3db733ece94fcd724d99 SHA-256: 5f00a691cad424e941952911a1d676f54c36d7bfd7628b54626e254929055fa9
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document contains numerous embedded links, with one identified as a known malicious redirector. The ML classifier also flagged this PDF with high confidence. The primary attack pattern involves luring the user to click on these links, which likely leads to a phishing page or malware download. No scripts were extracted, but the presence of multiple links and the malicious redirector strongly suggest a malicious intent.

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://cctraff.ru/aws?keyword=beef+jerky+smothered+in+hot+sauce In PDF document text
    • https://vekaluledezo.weebly.com/uploads/1/3/4/2/134235689/bubenudafir.pdfIn PDF document text
    • https://josadezabo.weebly.com/uploads/1/3/4/4/134490641/9799612.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366018/normal_5f86f48c356e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366362/normal_5f887cb7b5bbf.pdfIn PDF document text
    • https://vabeliguteziji.weebly.com/uploads/1/3/1/3/131379360/391738901c97a.pdfIn PDF document text
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/jenemapis.pdfIn PDF document text
    • https://mabanopovofed.weebly.com/uploads/1/3/1/4/131453130/resoxixo.pdfIn PDF document text
    • https://tedumuwoke.weebly.com/uploads/1/3/1/3/131397970/sejefox-xuwebusuworevex-puwamiserag-tudelefomudap.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/ac208a8c-eafe-4d72-9186-7ff9de6db921/77979401455.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0507/6254/7370/files/jazesugunimeduliran.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_off000052d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52D3 5520 bytes
SHA-256: 22d35320c78a113b07b808b733aee1be82ce3de2b9c5291b7be600e26da53f44
font_01_sfnt_off00006586.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6586 11916 bytes
SHA-256: fa67c132e253c9732a4e49dd1ea803e486e1bebb0358cd58b1db7158d447ebaa

Open this report in the interactive analyzer, or submit your own file for analysis.