Malicious PDF — malware analysis report

Static analysis result for SHA-256 7939e8af89a5f28f…

MALICIOUS

PDF

44.2 KB Created: 2020-11-05 16:23:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-15
MD5: cfd06181614e0a6af588fbce9c8ee6c2 SHA-1: 25422fb1deea66e7b5b66343523c868ad7369dd3 SHA-256: 7939e8af89a5f28f113239ac532238db63435cdd905b683131590716b363609c
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://gettraff.ru/wb?keyword=2012%20audi%20a6%20owners%20manual%20pdf In PDF document text
    • https://fawefugixizim.weebly.com/uploads/1/3/1/3/131383791/donafetewejaxa-tamupejo-sosikizosox-pironegoduvov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380523/normal_5f9f416b836d7.pdfIn PDF document text
    • https://jopalezaleloloj.weebly.com/uploads/1/3/1/3/131380469/sutuzuwo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375708/normal_5f8bfffc71945.pdfIn PDF document text
    • https://palozemoxapido.weebly.com/uploads/1/3/4/3/134366311/8cf2c3191279e.pdfIn PDF document text
    • https://kesamitowusiniw.weebly.com/uploads/1/3/4/4/134441112/3324058.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/18299fc2-8d9d-4c37-a539-1920b6ed8ce8/87337447761.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/deaccf5f-3ce4-4bd7-a122-dcec6e9bab1b/zerudame.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7eaf21cb-57df-4de4-bbf4-240066a233b4/55178839262.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/civil_war_quizizz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/815720a6-e389-4744-a6f8-13934c988bc1/11269621716.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc1d2e72-09d4-4bb2-9893-9423ea0d113d/kasakodoranosubefol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6466838-128b-4882-baef-e8261db21ed5/kogebelokepotiwoxega.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/48996765237.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/jekinuwomudekuzovupajasix.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_off00006b5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B5E 5664 bytes
SHA-256: bac1313f738b1465018f477f2da1e2e1d497298c4435878305734735d1cb291b
font_01_sfnt_off00007ea4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA4 11440 bytes
SHA-256: 67748f0fdf9ff98f721f855c1c500b085d17a2a451328e0271485827d45efa22

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