Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd9641c5a02df6f…

MALICIOUS

PDF

49.0 KB Created: 2020-10-17 02:05:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-26
MD5: 9036a88548dd36a4793109c1e7d3d3aa SHA-1: 1d7d203ddf3214c58a347cd3df5ae6161eafa091 SHA-256: 3dd9641c5a02df6fd169812448473bdbfabce8acb11f56343304d02e6fd5204d
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://ggtraff.ru/wb?keyword=stihl%20fs%2055%20trimmer%20head%20parts In PDF document text
    • https://cdn-cms.f-static.net/uploads/4372377/normal_5f8a213058b65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366308/normal_5f87528c70a16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365626/normal_5f88206f9c0d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369663/normal_5f8873892c0eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373519/normal_5f8a25d84d8b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369168/normal_5f880021bc021.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/xelikanotuzifaja.pdfIn PDF document text
    • https://ditiwudo.weebly.com/uploads/1/3/1/4/131452947/setifafe-jemorapu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371005/normal_5f8a0a6e65ab5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369502/normal_5f87de0dc3b7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367960/normal_5f8a0d4d28112.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/ab0c751c-ccc0-4669-a13e-6ce9b586997d/xutinoveverajebobonapu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d0c6ff9-e653-444f-97d0-018c8b4a2757/gujotodotiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fc162ee-80ae-4007-9eb1-7ff4aab9ec1f/29633970931.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a463b189-81bf-4d38-8b62-85009b139ebd/fun_math_worksheets_for_second_graders.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2286eb7c-da64-4119-8728-b6fc8e4faeb7/20671475543.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a0d0bfe-09c0-468b-96d4-08486ab08d6f/sutalavetuleluxugomipu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000074ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74AE 5080 bytes
SHA-256: a4640443bc0273c081571fe422b82c783b12b748aeaafa2230775a657e8f1b85
font_01_sfnt_off000085e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85E9 10236 bytes
SHA-256: 3e6cdcaed7099d15fc936f34fd3272f22ac1776490427f40998bd430a67f124d
font_02_sfnt_off0000a8d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8D4 4324 bytes
SHA-256: 8405bb6ca9a6fb718a2e910e1cdde4d74ac2122cab0061dc5f772322db9c7ccd

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