MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF document employs a common SEO poisoning tactic, presenting itself as a biology book to lure users into clicking a link. The primary link redirects to `https://ttraff.ru/pify?keyword=klb+biology+book+1+pdf`, which is identified as malicious redirector infrastructure. The document also contains a large number of links to benign Shopify-hosted PDFs, likely to improve search engine ranking and mask the malicious intent. No scripts were extracted, but the PDF structure itself facilitates the redirection.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF 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.
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall 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.
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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF 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.
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe 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.
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Embedded URL info EMBEDDED_URLOne 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.ru/pify?keyword=klb+biology+book+1+pdf In PDF document text
- http://wixive.mrobinsonartworks.com/uploads/1/3/2/6/132681670/kakobezu.pdfIn PDF document text
- http://files.acuedge.net/uploads/1/3/0/8/130874416/9663850.pdfIn PDF document text
- http://files.janaina-vieira-marques.com/uploads/1/3/1/4/131436967/1213616.pdfIn PDF document text
- http://files.austinhighseniors.com/uploads/1/3/0/9/130969656/a1f4bcbd6.pdfIn PDF document text
- http://files.activediabetics.com/uploads/1/3/0/7/130738603/442238.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/1/0437/7837/5829/files/17547420669.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/5427/7532/files/regujoramomirenawotosari.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8489/7701/files/38196666583.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3764/6245/files/final_fantasy_vii_rom.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71340125447.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40035930655.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5580/7640/files/38963261587.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9812/0094/files/62790071517.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/9898/6909/files/bazekasufikozek.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/0994/7301/files/wazuliludawanometegusug.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3459/0888/files/24900857039.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9870/9918/files/webasa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0134/8255/files/64668060898.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005c99.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5C99 | 4536 bytes |
SHA-256: 203947723b8e15c092e11652c8962c02b4aa810278f74a9701b6311193f07c2e |
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font_01_sfnt_off00006c0b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6C0B | 9984 bytes |
SHA-256: 580c1e698e3fd29123efdb566b07766ac43949327c06c471288adf7e6ffcbe85 |
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font_02_sfnt_off00008e12.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8E12 | 4324 bytes |
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378 |
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