Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a2372c1d0d0ebe1…

MALICIOUS

PDF

83.9 KB Created: 2021-02-21 20:14:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: a3d2bc48c2e3d0d223eb50a921f6a98b SHA-1: adafdf3aa24b7caded5bd7c5b3edbf54d8803ab7 SHA-256: 3a2372c1d0d0ebe1861eb0f9fdef96aac2cc560c6da3f92eb547de79718441c4
196 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. It contains a link farm with numerous external URLs, including a redirector at `https://druttle.ru/strik?utm_term=warhammer+warcry+rulebook+pdf+download`, designed to lead users to potentially harmful content. The document body, though heavily obfuscated, suggests a theme of downloading rulebooks, aligning with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://druttle.ru/strik?utm_term=warhammer+warcry+rulebook+pdf+download PDF link annotation
    • http://poradoit1.site/name_generator_for_games_free_fire0jgsc.pdfIn PDF document text
    • https://cdn.sqhk.co/nejibija/gggjgdC/shoneys_crossroads_mall_hours.pdfIn PDF document text
    • https://cdn.sqhk.co/jisepozidis/g4xjijd/wallpaper_app_for_pc_windows_8.pdfIn PDF document text
    • https://cdn.sqhk.co/depivuni/idiwKrR/dotelirifapironepabati.pdfIn PDF document text
    • https://cdn.sqhk.co/poronujefino/ia5heid/26993472663.pdfIn PDF document text
    • https://xamifixi.weebly.com/uploads/1/3/1/8/131871938/mudugefubij-sijitawetapo-gepiw.pdfIn PDF document text
    • https://cdn.sqhk.co/moxinivo/hfMhdlm/hawthorn_bank_jefferson_city_mo_65101.pdfIn PDF document text
    • https://cdn.sqhk.co/bigulikexupa/azN03gh/fall_guy_tv_show_streaming.pdfIn PDF document text
    • https://cdn.sqhk.co/dibitarebizu/feBjagi/25516641907.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bulujono/stable_angina_guidelines_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/jeguzalunut.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_off00010bab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BAB 5628 bytes
SHA-256: 7d02518ee618253b541c172cec37748fbcf705c9dff127c4ff76f3d1e4cc6ef0
font_01_sfnt_off00011ebf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EBF 10672 bytes
SHA-256: 6218c729d87e4df649a46d2e34deca83d493d6fdb7b5bcd6343d42945548fb44

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