Malicious PDF — malware analysis report

Static analysis result for SHA-256 93458f820743b509…

MALICIOUS

PDF

74.6 KB Created: 2021-03-19 21:03:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 06cecbb22ee6278b65fcdcfccb41197b SHA-1: e1c1a2e52392485c153985c43a4247cd5df6d0eb SHA-256: 93458f820743b5090a2764e6fc85a3fc333a3def7fcdfbd18747801dd3093c33
136 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, including a ML classifier and ClamAV, indicating it is likely a phishing or malware delivery attempt. The presence of an external URI and an SEO redirector link points to a phishing lure, specifically disguised as a free download. The embedded URL, https://druttle.ru/123?utm_term=ulcerative+proctitis+treatment+guidelines, is the primary indicator of this malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/123?utm_term=ulcerative+proctitis+treatment+guidelines PDF link annotation
    • https://s3.amazonaws.com/turip/best_quest_guide_addon_wow_classic.pdfIn PDF document text
    • https://cdn.sqhk.co/busumodofu/hcwhg4t/41278048703.pdfIn PDF document text
    • https://cdn.sqhk.co/pefisemise/SNHUjiT/10491881791.pdfIn PDF document text
    • https://cdn.sqhk.co/lojosewude/ie0ZjfF/buzitegu.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/pajegan.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/33885482554.pdfIn PDF document text
    • http://madewithsunshine.com/jevufazawitub45a.pdfIn PDF document text
    • https://cdn.sqhk.co/josipinu/P0gc8gf/epson_iprint___windows_10.pdfIn PDF document text
    • http://wekeb.space/302118949243zyb7.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/67915782117.pdfIn PDF document text
    • https://cdn.sqhk.co/binebelezux/hiO6hLq/astronest_the_beginning_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/makafabakuna/epjgbPs/vegetable_chop_suey_recipe_with_cabbage.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/civ_6_guide_england.pdfIn PDF document text
    • https://s3.amazonaws.com/fevobelijogal/flirty_good_morning_texts_to_send_a_girl.pdfIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/free_download_30_juz_alquran_mp3.pdfIn PDF document text
    • http://groby-ritual.online/gutekabulesivufumoma3ss9n.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sovogezo.atwebpages.com/ac_sweep_pspice.pdfIn PDF document text
    • http://ropupifalapoges.atwebpages.com/zolufutosutegewa.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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e43f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE43F 5444 bytes
SHA-256: 07c8c07676ea45c9c26c115dc614555db76d0a2f7a6f611768b69dd1c8cbc575
font_01_sfnt_off0000f6b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B3 11524 bytes
SHA-256: 1e8d54bb5421b86ee1b5cb827572680361085121f841f882df0d36da04e9b1aa

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