Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5db2db20db9f865…

MALICIOUS

PDF

67.6 KB Created: 2021-01-26 11:15:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-27
MD5: 51c76b9e1ef855ea35b0114cd04098fc SHA-1: f20983c1afebb15e8d2f60b97e1b250389720fd8 SHA-256: c5db2db20db9f8654f891f7afdf3371bd0a9ccb8bd2158e05b8e81919326e6b1
196 Risk Score

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://maypoin.ru/wb?keyword=disneyland%20paris%20hotel%20cheapest PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4369519/normal_5fefe7fd61a12.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369522/normal_5fced67cda6ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420432/normal_5fdc2e2b6bf2a.pdfIn PDF document text
    • https://cdn.sqhk.co/tejikeluz/bhiVgcp/75844569193.pdfIn PDF document text
    • https://cdn.sqhk.co/lexebogefaj/thi07ge/cat_jump_starter_cj3000_battery_replacement.pdfIn PDF document text
    • https://cdn.sqhk.co/suxupijisajo/jdgieTs/rainbow_stacker_cool_math_games.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413465/normal_6001ff65571c3.pdfIn PDF document text
    • https://juwufugoxeza.weebly.com/uploads/1/3/4/5/134528381/gapuvijilenek.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388420/normal_5ffac6b3e75ed.pdfIn PDF document text
    • https://cdn.sqhk.co/pimidima/jhkBhiG/watch_nfl_network_live_stream_free_online.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380890/normal_5fdc1914e6db3.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/zebarufuridorur/victoria_secret_show_performers_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/14451370199.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_off0000ca3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA3E 5260 bytes
SHA-256: adc2bf824c8863733a8f15e5265334140d1cc0fd6edbfaa2fce0e257c333d209
font_01_sfnt_off0000dc2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC2E 10608 bytes
SHA-256: 43291e9108cc2e3ae5b059aefbd84e2a8265ce8882449f682c5c8210a650181f