Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3cf9a4d2c54908…

MALICIOUS

PDF

43.2 KB Created: 2020-10-13 11:41:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-19
MD5: 3679ff644e8f3eb6aab1a0565b6b1377 SHA-1: eba4d6a09513a8256b040ca47ec415faca3963c1 SHA-256: 4e3cf9a4d2c54908361c317bbaa8039021557337e9b40c433946670bff97925a
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://cctraff.ru/strik?keyword=toyota+owners+manual+pdf+philippines In PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/09b03b.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/4041939.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/kezedivalo-bolumukejufufik.pdfIn PDF document text
    • https://site-1039621.mozfiles.com/files/1039621/nolov.pdfIn PDF document text
    • https://site-1038595.mozfiles.com/files/1038595/bitikubomakepef.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/489956c6-ddc4-4cf7-b40d-f3f3ea454911/71548354864.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c366b41-80d8-4a42-8c33-9caafb077d9c/vogaget.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b117382-b807-4dea-ad11-c50b98589e3b/51544823012.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f66c542-a0a5-43d6-a0a0-7942e75e9e30/tutusopolorebo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/690d68b2-4b61-4825-99f5-503379bc7333/lelurenusidix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d989b74f-3faf-479c-b8c0-a9a0b42d9a0a/45520889806.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_off00006926.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6926 5424 bytes
SHA-256: cf403fac8113ac8136755c6d9be2d31d5ec8d5e0cebc2314c304b7645d6ca961
font_01_sfnt_off00007b80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B80 10928 bytes
SHA-256: 59a3501ce15943e972c09e2c71712251341af2df0469da997432897c773c5f6a