Malicious PDF — malware analysis report

Static analysis result for SHA-256 25be576dacfe79c9…

MALICIOUS

PDF

76.9 KB Created: 2021-02-12 04:05:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 1d3d805396a83f1fa09262bab620666c SHA-1: af94802afd42d1bbaa8c90bdf487f7cc0bfd144f SHA-256: 25be576dacfe79c99d271e61aa3119718795e2174c2e053e9833d2a2e5673530
136 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, with heuristics indicating it uses an image lure to redirect users to an external URL. This URL, https://leonvi.ru/123?utm_term=bissell+proheat+2x+9500+repair+manual, is presented as a repair manual, suggesting a phishing or scam attempt. No scripts were extracted, but the overall structure and detection indicate a malicious document designed to trick users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/123?utm_term=bissell+proheat+2x+9500+repair+manual PDF link annotation
    • https://cdn.sqhk.co/dodufiruw/tPljfje/90534488151.pdfIn PDF document text
    • http://tradebot.space/vofugubologuziwigoxasu5pzzm.pdfIn PDF document text
    • http://amaryllis.space/62552887760akh2e.pdfIn PDF document text
    • https://cdn.sqhk.co/jasekazus/idhcPZh/13405628871.pdfIn PDF document text
    • https://cdn.sqhk.co/lawafopugu/icifhgr/53365849297.pdfIn PDF document text
    • http://bloomwithdeanna.com/monkey_types_for_petscyn0s.pdfIn PDF document text
    • https://cdn.sqhk.co/vufuvevu/gegdihh/69425153069.pdfIn PDF document text
    • http://ca-management.website/ai_hide_and_seek_game_downloadvbmhk.pdfIn PDF document text
    • https://cdn.sqhk.co/zebimapajod/eQ36BA0/voziwu.pdfIn PDF document text
    • http://1green.space/17757648998hjmp8.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/kudefem/73828845424.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/5mm_aluminium_sheet_sizes.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/epayroll_system_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/xunerigi.pdfIn PDF document text
    • http://weridujesuta.epizy.com/symmetric_bilinear_form_characteristic_2.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/wovabebe.pdfIn PDF document text
    • https://s3.amazonaws.com/daniwodug/australopithecus_sediba.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/haryana_judiciary_exam_2018_answer_key.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_off0000ec2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC2B 5732 bytes
SHA-256: 8be3c9afa324d0d36da5f407a97a5c3489bd7d9dc4c321ebf0ea77d292cd13fd
font_01_sfnt_off0000ff83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF83 11272 bytes
SHA-256: bda095754212f3747957842e3d37170de01b7efa73c5b982477e17aff0cfee04

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