Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd9bbf08802776b…

MALICIOUS

PDF

69.9 KB Created: 2020-12-20 00:53:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-26
MD5: ca5be41aa33dd901d0f9e4ba7ad39893 SHA-1: 3792b7b28f756e0fd48a926307cc311e4ebbe6ec SHA-256: 3dd9bbf08802776b9bf4b35b354043b2b58bef73ab47c45401e1efb9c6deb40c
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/123?utm_term=age+of+consent+in+south+america+countries In PDF document text
    • https://nadevakijod.weebly.com/uploads/1/3/4/4/134490940/65e4db884b.pdfIn PDF document text
    • https://polabufasol.weebly.com/uploads/1/3/2/8/132814050/0c5621b.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/067ac0e4-a51f-4a7a-af00-172add3edf1c/jivupunagufetasuwo.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/91976480891.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ebcde73-892b-4db7-b46f-fef590c8d6f4/18743813698.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ff4d586-ddda-49f9-8ab6-ea763b965306/can_the_wii_mini_play_gamecube_games.pdfIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/ravuxalagugetebo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0bebbcd1e280355d37542/t/5fc1708f3f75b166430ac755/1606512783545/zakirixaxilanutog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d894c92-2c0a-4620-b2f2-0ec95132cf11/zonofopitasesonutizapok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da8bdf14-330e-4c3e-9f1c-7fdb084423d5/xufotatenufaman.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc364a740f1034a5cb8cf86/t/5fc3f0a861e25426e1b1ab60/1606676648895/speed_v_of_waves_on_a_string.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b5f9be6-61e5-48ff-bd9c-362fee298d55/56500278816.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/resignation_letter_template_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c56d99bb-01ee-4cb4-9dd2-66ed660f9496/93305198183.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_off0000d495.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD495 5252 bytes
SHA-256: 4a1ed8029da69d56c35a57447e2e0fb7cddbefc3f113ee3febafcd4be0075b55
font_01_sfnt_off0000e656.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE656 10940 bytes
SHA-256: ccd30d85d7d41bc30cce0cbf289737c2b5b060e78e5809fa1f767fd5fe8f9d85

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