Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f617fea0315484e…

MALICIOUS

PDF

68.4 KB Created: 2020-11-24 09:52:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-30
MD5: 504c80e2c927f4472310408505565202 SHA-1: 5f51d62e6a4d9f6e39ad9083e5458fc19ab00a58 SHA-256: 8f617fea0315484e4a9f45fe0f6d117b7194ab762fd84aeadcbd410170c4c3a0
262 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://cdn-cms.f-static.net/uploads/4406170/normal_5fac3026e1fb7.pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4407303/normal_5fafff5f0cdea.pdfIn PDF document text
    • https://jujepuwajepoxox.weebly.com/uploads/1/3/4/4/134466337/wigexa_rekusiva.pdfIn PDF document text
    • https://gexirirexov.weebly.com/uploads/1/3/0/8/130874239/2304338.pdfIn PDF document text
    • https://jugubiwujivivej.weebly.com/uploads/1/3/4/3/134352954/9fb909b14d6ea2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366406/normal_5f93046290859.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367013/normal_5f8746ba3267d.pdfIn PDF document text
    • https://pivozedotafi.weebly.com/uploads/1/3/1/0/131070355/e680c1fcd1be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369190/normal_5f9e1a4ae9a6c.pdfIn PDF document text
    • https://dukutisanag.weebly.com/uploads/1/3/4/3/134318107/nisoki-nerulolur-bowukuditefeb-kogirad.pdfIn PDF document text
    • https://traffine.ru/wb?keyword=hbse%20open%2010th%20online%20formIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000c31a.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000c31a.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0000f6c4.bin)
    • https://uploads.strikinglycdn.com/files/84b6c0d3-5245-47a0-898f-78aa9e590514/36928973636.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bf5c338-3a72-42c1-a68a-f0f62d56d9dd/yurok_tribe_food.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5337b8d6-e067-4fbd-b08f-7b9db5f5873f/love_and_logic_book.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 extracted file (font_00_sfnt_off0000c31a.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c31a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC31A 5016 bytes
SHA-256: 5e703047e8b10dfea48c972cb5dc71425200d5da3ab17aa78d28c4576b85088a
font_01_sfnt_off0000d3e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3E6 10164 bytes
SHA-256: 2d2d848183a4c3202c0fd437fbaf6d7e96d1414452a52a934ea5590bdc997f29
font_02_sfnt_off0000f6c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6C4 4324 bytes
SHA-256: 781b9fae2fb9201b4a05d2041fea553bb2973f1d011ab9c51e3326c72e342c60