Malicious PDF — malware analysis report

Static analysis result for SHA-256 18a16b0d596a710c…

MALICIOUS

PDF

42.4 KB Created: 2020-11-07 00:59:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 5d1f074505a3a2905c0fb901f78a061a SHA-1: a898c29cfe5f8c0b583338299c7b4fccaba1486b SHA-256: 18a16b0d596a710cd7d5ed83bcd78d82620ac66054832f100300842871c9389a
106 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • PDF carries website-builder CDN document link farm medium PDF_CDN_PDF_LINK_FARM
    PDF contains many clickable PDF links parked on website-builder CDNs or simple download gateways together with visible ebook, manual, or download lure text. This matches generated SEO document carriers used to route users through untrusted link/download chains; the PDF itself is an inert link carrier.
  • 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://trafftec.ru/wb?keyword=age%20of%20romeo%20in%20romeo%20and%20juliet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409098/normal_5f97edaf887d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390383/normal_5f987c22d48e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383450/normal_5f907257cccb0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371807/normal_5f898b27232e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384832/normal_5f8e9d79591db.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/kefozenexobokifedirafibu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368222/normal_5f937bd9324ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466657/normal_5fa48bb0a4d6f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387819/normal_5fa19ff19f599.pdfIn PDF document text
    • https://s3.amazonaws.com/kukazowox/54415495387.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005ab0.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005ab0.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off00008ed9.bin)
    • https://uploads.strikinglycdn.com/files/57aba67a-fe8f-4df1-a86a-b93dc5b7ecc4/60636080530.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b210a87b-5532-4221-967c-b0f589f2d95f/wubinipa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61022d83-a22f-4752-84a3-06fe8ec8b33d/pulsion_et_destin_des_pulsions.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_off00005ab0.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ab0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AB0 4996 bytes
SHA-256: 2225b24ef08a8340d1fd3b35f84d96c278aae85214487a8b0083c76d5c37a7ad
font_01_sfnt_off00006b96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B96 10352 bytes
SHA-256: 97a83d25d2ea89681d5fef6eceb26fa2e848410df83c8d786bacd528f89d4189
font_02_sfnt_off00008ed9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ED9 4324 bytes
SHA-256: ad623bc7c681097dfa1224999cf6cc6072d3ca9a137655dc1129b0261f0b357c