Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dddb095a383bf95…

MALICIOUS

PDF

60.8 KB Created: 2020-11-24 03:42:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-26
MD5: 4449ab2a7bd6d89917b01ebae75a4334 SHA-1: ec783ca2804ac4231c79a928ce7a51eb7cb0619e SHA-256: 3dddb095a383bf958ddfb4f7a34bb4ef63ad3c94cb28d1c472a74bc6e7816f26
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://cctraff.ru/wb?keyword=teacher%20calendar%20planner%20template In PDF document text
    • https://togitarusufojir.weebly.com/uploads/1/3/2/6/132681229/navexarozubuzupo.pdfIn PDF document text
    • https://labajilawuja.weebly.com/uploads/1/3/1/4/131406369/3433142.pdfIn PDF document text
    • https://lotisawiro.weebly.com/uploads/1/3/4/6/134625457/fodemelowigi_sofisojixu_voxujubajevufo_pajobiwosola.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/c87ea8d9-e7a7-4396-b3f7-a60c8f187027/dofarifuxoruvitotizefega.pdfIn PDF document text
    • https://s3.amazonaws.com/dofufiri/72274100126.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/jupiputogole.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8a3671a-9031-4852-9b2f-d78b0b7fee83/24509716659.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6476202-2d2a-48e4-828c-f3237d6cc2ee/stardew_valley_museum_bug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2efa8fe3-0aa2-4ee1-8a52-ec700c5c3511/original_singer_of_hallelujah.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7dec337f-84de-46d4-bee3-a89d1bf21cc4/lego_batman_games_for_wii.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_off0000b522.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB522 5084 bytes
SHA-256: 1efe21072319c290414f322cfa4a1457784ffc1fa723fe965d24f22f235f2480
font_01_sfnt_off0000c63d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC63D 9384 bytes
SHA-256: c123a06edb6b5ac6b6af6b66f709ffbafc45fee098114e6ad178c9e2bb133ea0