Malicious PDF — malware analysis report

Static analysis result for SHA-256 195231c544ca7e25…

MALICIOUS

PDF

72.2 KB Created: 2020-11-28 09:58:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 017a168182719c86a5297bd8b88f8bfb SHA-1: 1cc167f9f8dfcba12b8483a791d8875207a496a0 SHA-256: 195231c544ca7e25d34cd3f687408fbaf06a2c450461e55e919752d4bfea56bd
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains a lure referencing 'Neoclassical ballet characteristics' and embeds a URL pointing to a known malicious redirector. This suggests the document is designed to trick users into visiting a malicious site, likely for phishing or to download further malware. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://traffking.ru/strik?utm_term=neoclassical+ballet+characteristics In PDF document text
    • https://mafopobivo.weebly.com/uploads/1/3/4/3/134322173/potonosavuke.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365600/normal_5f870302d453a.pdfIn PDF document text
    • https://nipefewemaxu.weebly.com/uploads/1/3/4/3/134387654/5992082.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386848/normal_5f91bdc3d2013.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/e085d146-7066-4ac3-90f7-77cce8bcd833/sagavutirutekuvo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/616d0be8-8400-49f8-a2cd-cec994f55e0f/lukuxina.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05d38f34-0e30-44f0-8333-250cf9bc0a2a/69262565801.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c23970a-1c66-4f46-9c16-e147d3f0b2fd/21666882883.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9782300f-20a9-4553-99ff-33b019979310/how_to_respond_when_you_feel_mistreated_john_bevere.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/ethidium_bromide_toxicity.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_off0000e20a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE20A 4996 bytes
SHA-256: d121969526f8c30f22e4078185282266d0c11636cc02b454960cd2fc25f306e0
font_01_sfnt_off0000f2fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2FC 9788 bytes
SHA-256: 1b28f0a7d4be1d35f7e55deaec614f732afe54d7ed1002526a40ff6ee45f319e

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