Malicious PDF — malware analysis report

Static analysis result for SHA-256 446630185076bf31…

MALICIOUS

PDF

63.0 KB Created: 2020-12-22 18:22:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 84fb91bc781c9d0d533da5eee255eefc SHA-1: f65ace90e8c76e7a817927b3ffd78800c8664557 SHA-256: 446630185076bf3190d0b0e4aed1f340e463a3fccb7713d1755208e7c5244e5e
254 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating it is a malicious redirector, specifically designed to lead users to phishing or malware download sites. The embedded URLs point to known malicious infrastructure, and the document body, though obfuscated, suggests a lure related to 'Tattoo font maker cursive'. The presence of numerous links to external PDFs, some benign and some unknown, further supports the SEO link farm and redirector pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://ggtraff.ru/strik?utm_term=tattoo+font+maker+cursive In PDF document text
    • https://pojojozujivalim.weebly.com/uploads/1/3/1/1/131164399/mipudamubamibafuru.pdfIn PDF document text
    • https://rogapunuki.weebly.com/uploads/1/3/4/3/134375427/5842193.pdfIn PDF document text
    • https://zajevikafe.weebly.com/uploads/1/3/5/2/135297545/6704086.pdfIn PDF document text
    • https://pisolapep.weebly.com/uploads/1/3/4/6/134648883/kipuxo.pdfIn PDF document text
    • https://sezariserafuf.weebly.com/uploads/1/3/4/6/134673330/df2b4a.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/f1aff928-041f-49f8-9425-cb5b1dbdaaef/comal_isd_calendar_2018-19.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6303f22-0925-4852-a7d4-4e4ccbc50270/purineniwabaz.pdfIn PDF document text
    • https://s3.amazonaws.com/nademopor/friends_general_knowledge_quiz_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0a55470-ffce-41c7-8529-47f5f4991a38/33966151937.pdfIn PDF document text
    • https://s3.amazonaws.com/takateg/ella_minnow_pea_free.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/49060945903.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_off0000bbb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBB3 5068 bytes
SHA-256: dd7cbd06bc9ff237a813996276ef78a1a6fa4968144d70901bfa87eae261c323
font_01_sfnt_off0000ccec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCEC 10256 bytes
SHA-256: a193fca437d621b2a8f4289e2d4f3966d6debfa52b5b4c9e19a74c4592861658

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