Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ddcb933e9674717…

MALICIOUS

PDF

72.8 KB Created: 2020-11-19 23:17:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-25
MD5: 9755d013e5a99f2bdee27336467e2b67 SHA-1: a53bcb5a757432f3e3b4e98bcbc65f564621dbb1 SHA-256: 3ddcb933e96747176af6705fa4885fafd7ee15bdedacf41ea8f1722e68beff92
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffine.ru/wb?keyword=icloud%20agenda%20koppelen%20aan%20android In PDF document text
    • https://cdn-cms.f-static.net/uploads/4427780/normal_5faf587e1d942.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370561/normal_5f8ba217bc360.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388427/normal_5fb2ca65f1582.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481552/normal_5fb31e135ddcc.pdfIn PDF document text
    • https://zoxetojasag.weebly.com/uploads/1/3/1/4/131437223/sonetofiru.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409243/normal_5fa6ec6734160.pdfIn PDF document text
    • https://pafuzoxim.weebly.com/uploads/1/3/4/5/134585506/rizava.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367300/normal_5f8ab6e3551c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413458/normal_5f953a5c6d8ba.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/2195f2c5-7ca6-4846-be0c-a2a6f4f649ef/semavoranilerutiwojanoj.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/nalabifaxuduja.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000becb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBECB 4868 bytes
SHA-256: 1918f8486bd96d270fb1352ff8c51e8c1c539a6a3c01b6a77275e3961f09f488
font_01_sfnt_off0000cf50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF50 10248 bytes
SHA-256: a211032b86d940f5d951bb157dbab0cf8a20dfac2580bbf5caa117ef0a44fdc6
font_02_sfnt_off0000f295.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF295 16388 bytes
SHA-256: a4f616c8ed03231f927c8f6725ddfb6aed79ba1e9c0c9257d690ec40f184d4cc
font_03_sfnt_off00010824.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10824 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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