Malicious PDF — malware analysis report

Static analysis result for SHA-256 df7e7792ece152f9…

MALICIOUS

PDF

93.4 KB Created: 2021-02-21 03:34:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 2ddefcc7e6117e1265bc8402b0ec4fd9 SHA-1: 3c0d0c606fb2494fd9277db21256458d1f4131a4 SHA-256: df7e7792ece152f9f8bd396f9ff1d1885a5b8e2d0b0d4c9da533ef88ea173b57
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, many of which point to SEO-optimized PDF files hosted on various platforms, suggesting a link farm or phishing lure. The presence of ClamAV detection and ML classification strongly indicates malicious intent. The embedded links, such as 'https://jacksth.ru/strik?utm_term=what+is+francois+philosophy+of+leadership', are likely used to redirect users to malicious content or phishing pages.

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
  • 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://jacksth.ru/strik?utm_term=what+is+francois+philosophy+of+leadership PDF link annotation
    • https://cdn.sqhk.co/vozaxodep/hdHigY7/geometry_dash_2._2_apk_download_pc.pdfIn PDF document text
    • https://fiwisito.weebly.com/uploads/1/3/4/7/134715438/7373499.pdfIn PDF document text
    • https://cdn.sqhk.co/soxuwutitaw/fWmhbKj/best_nascar_mobile_games.pdfIn PDF document text
    • http://xavelodezazil.iblogger.org/67692894196.pdfIn PDF document text
    • https://cdn.sqhk.co/sezogitov/niaCeid/4_in_a_line_game_download_apkpure.pdfIn PDF document text
    • https://cdn.sqhk.co/pixorikibam/hfTLhcr/original_asteroids_arcade_game_for_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/kagurase/gdheCjb/multiple_icloud_accounts_on_ipad.pdfIn PDF document text
    • https://verebabivudasa.weebly.com/uploads/1/3/4/7/134771522/gipun_wedovepepe_fakixawog_pesujetalene.pdfIn PDF document text
    • https://cdn.sqhk.co/nukunudakiju/ghWKQhb/juxomenafarusofitutare.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495691/normal_5fe129afe3adb.pdfIn PDF document text
    • https://cdn.sqhk.co/vorebilifi/dsiiihT/40107495908.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/fifomi/manual_del_chevrolet_spark_2008.pdfIn PDF document text
    • https://s3.amazonaws.com/dazawojob/kajetibape.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/75426986837.pdfIn PDF document text
    • https://s3.amazonaws.com/zoxewudunigus/elexon_bmrs_reports.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_off0001301c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1301C 5360 bytes
SHA-256: b9e5f62df2ace85fff78961a9fdca87a0be990ad7ea30c5482879f284879d769
font_01_sfnt_off00014268.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14268 11164 bytes
SHA-256: 396ce88b1dc00e91a8a436952cf925b461adb4edca6b1caacdad5ff1167c1c61

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