Malicious PDF — malware analysis report

Static analysis result for SHA-256 8453b18666b8c9d4…

MALICIOUS

PDF

44.1 KB Created: 2020-08-23 04:05:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 594514c7dab5da1262e00bc82a41809c SHA-1: de5782250d1b984fc71fb82d669749d45d87d7b5 SHA-256: 8453b18666b8c9d4f4aae62ff47dfb1d3b03ca2c29e9131eede7e7f10f16ddaf
194 Risk Score

Malware Insights

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

This PDF file contains multiple embedded links, including one pointing to a known malicious redirector infrastructure at `https://ttraff.cc/pify?keyword=corpus+christi+cranebrook+school+uniform`. The document body, though partially corrupted, also contains this URL and numerous other links to PDF files hosted on Shopify, suggesting a link farm or phishing attempt. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://ttraff.cc/pify?keyword=corpus+christi+cranebrook+school+uniform In PDF document text
    • http://files.paulzimmerman.hk/uploads/1/3/1/4/131452735/7794559.pdfIn PDF document text
    • http://files.ibomusicalvoyage.com/uploads/1/3/2/7/132712235/ruxekazu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/pevarukewonoremidudi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0695/0558/files/fovamowipo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54903558396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8773/8533/files/24720392591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6170/5890/files/duvilifogirolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4923/8184/files/falazipufefiwiwawik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4389/8019/files/93258282456.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6100/8791/files/17376735745.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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005db4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB4 5364 bytes
SHA-256: 47039fdb72a8d676a57a9f2704a0ab216a491f66046c8f122b93647c309bac85
font_01_sfnt_off00006fbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FBF 10548 bytes
SHA-256: 8b34aa8d889b41765270b648b2dfbe81b7da1254ba5247beef32737a221e398d
font_02_sfnt_off000093bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93BF 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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