Malicious PDF — malware analysis report

Static analysis result for SHA-256 c28468811f4cd58a…

MALICIOUS

PDF

41.9 KB Created: 2020-08-21 18:45:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 73a977d2bc9d09861b5c9bf8133156ca SHA-1: 8de678e005486fa16e5ad084450677d9da3d7622 SHA-256: c28468811f4cd58a096a76f92004353e43a5e89264e9ddda056b4e84986cc4a8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links, many of which point to an SEO redirector infrastructure (ttraff.cc) that is known to host malicious content. The document body, though heavily obfuscated, contains references to book summaries and the malicious URL, suggesting a phishing or scam lure. The ML classifier strongly indicates maliciousness, and the presence of multiple redirector links confirms a high likelihood of malicious intent.

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=adyashanti+falling+into+grace+pdf In PDF document text
    • http://files.worldfestivaloftrees.org/uploads/1/3/0/7/130775371/sufizanewizevej-remewan.pdfIn PDF document text
    • http://gelunuv.sandraclarke.ca/uploads/1/3/1/8/131856643/sidabegeweriduxis.pdfIn PDF document text
    • http://files.prssasdsu.com/uploads/1/3/2/7/132741535/7751938.pdfIn PDF document text
    • http://pebix.joscadenise.com/uploads/1/3/0/8/130814297/zipixijuxar.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/1/0448/2197/1104/files/outliers_malcolm_gladwell_summary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6104/1569/files/wokuge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4542/8122/files/abundance_book_by_peter_diamandis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/0436/6748/files/kolevamazusuno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6078/9409/files/97210103000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9027/1638/files/17044354411.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5175/3380/files/brookfield_viscometer_calibration_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2670/0696/files/jafunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8759/2608/files/dabavomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4300/2270/files/couper_un_fichier_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/norojakibi.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 4

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_off00005848.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5848 5296 bytes
SHA-256: 6a5de4910806452afb730991d57ea6c9ecbed80db74ddb5d87fd40bb6adf22c6
font_01_sfnt_off00006a43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A43 10120 bytes
SHA-256: d3722ffb716fd61b7a4290b0d4e50520e71ac193ffe097628ce7afdced9b420b
font_02_sfnt_off00008cd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CD9 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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