Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0c9db45df77b35c…

MALICIOUS

PDF

59.4 KB Created: 2020-10-11 19:48:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-03
MD5: 3dfb894c3039703f8fbfa31e5c4aa328 SHA-1: 8d41ca5b50a6f3bfdcc5953420e8fcb37bcee89d SHA-256: c0c9db45df77b35cb173a4c7404ed0461dbfd2bda8074e7fd784f828025b6e03
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/strik?keyword=nine+count+blackjack+pdf In PDF document text
    • http://poxeg.eaglerobotics.net/uploads/1/3/2/6/132681229/6e59d.pdfIn PDF document text
    • http://files.cjearle.com/uploads/1/3/1/4/131454012/296592.pdfIn PDF document text
    • https://site-1036807.mozfiles.com/files/1036807/89043862499.pdfIn PDF document text
    • https://site-1039864.mozfiles.com/files/1039864/rowowapopoxesas.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00009b26.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00009b26.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0000d178.bin)
    • https://uploads.strikinglycdn.com/files/efe7eabc-6bbd-444e-a1e5-dcaf4e249c04/63294549148.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab5432ef-3fb6-411e-8e1f-80dcc26b6f9a/54389149586.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04d4e287-a9f2-4c5c-a72c-34b47b657cb1/27185306229.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/106c6631-78b2-4189-ba6a-437186f5a083/kanilumuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c6842fc-8490-4064-8ee8-111c5adde92c/laretafizorowopu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62e158e0-5361-4042-b646-032df322e052/dizuvirofegapinupar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d685917-2aa2-41f6-b801-c8c78900fcd4/xezujomikojelidewazigu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51bc21b3-5bf0-4acd-9b32-d78e49d10fec/dasatanewoveziwibo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0e5358b-58ef-4582-93b2-0e27110afac4/6896653891.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 extracted file (font_00_sfnt_off00009b26.bin)

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009b26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B26 5008 bytes
SHA-256: bda6c23da80adb1334962b96ce4a9a092d94c83ba4e12ecab65c88e5d7ad7acd
font_01_sfnt_off0000ac3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC3D 10952 bytes
SHA-256: 9720ec2a3726ceadf8a7f3fad56b433ecd7348823f67e8e912e805f89cd8a6c5
font_02_sfnt_off0000d178.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD178 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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