Malicious PDF — malware analysis report

Static analysis result for SHA-256 97bbe6d9d237f9f1…

MALICIOUS

PDF

69.3 KB Created: 2021-02-19 02:07:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: ab07a7bd4f27308e330a7cc83de6c6a9 SHA-1: 8e4d8796de59e6403f1bd47b409a063598d28d55 SHA-256: 97bbe6d9d237f9f13eb58731d9c322074999a05f2c5e09636a93488c4a6de764
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, many pointing to other PDFs, suggesting a link farm designed to improve search engine rankings or distribute malicious content. The primary lure URL, 'https://leonvi.ru/123?utm_term=kung+fu+hustle+full+movie+hindi+mp4', is identified as an SEO redirector for phishing. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a phishing or content-farming attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://leonvi.ru/123?utm_term=kung+fu+hustle+full+movie+hindi+mp4 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4376120/normal_6010d29f8b231.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468814/normal_5ff5419f0cfe7.pdfIn PDF document text
    • http://zazuvivilug.iblogger.org/2302905403.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384037/normal_601d29fa2cdb3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426415/normal_60171396b57ff.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405662/normal_5ffbca737c62d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423133/normal_60272eb064643.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500444/normal_5ff7a4bcb8c81.pdfIn PDF document text
    • https://rejudizik.weebly.com/uploads/1/3/4/7/134701546/2574401.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494136/normal_601367ac2cb39.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wexalaz.epizy.com/17798082633.pdfIn PDF document text
    • http://junedujivoxoz.epizy.com/march_madness_bracket_blank_template.pdfIn PDF document text
    • https://s3.amazonaws.com/xabalaru/axa_insurance_qatar_reimbursement_form.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_off0000d0b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0B7 5268 bytes
SHA-256: 7a770f09602c169cb479dc9b965bbe63951f114ac1aef1193f029f834d027e37
font_01_sfnt_off0000e2a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2A1 11052 bytes
SHA-256: a8c46cb1ec4b6a17a2353436fa889b221f11c3ada2473651da7d947ae9577c33

Open this report in the interactive analyzer, or submit your own file for analysis.