MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF document was flagged as malicious by an ML classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. It also exhibits characteristics of a PDF link farm, embedding numerous external links, many of which point to Shopify domains. The primary malicious URL identified is https://ttraff.ru/pify?keyword=equivalent+ratios+worksheet+kuta, which likely serves as a gateway to further malicious content. The document body contains garbled text and references to 'wkhtmltopdf', suggesting it was programmatically generated.
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=equivalent+ratios+worksheet+kuta In PDF document text
- http://files.dallasemmaus.org/uploads/1/3/1/3/131398091/zoxufitubovatugobox.pdfIn PDF document text
- http://files.thebrainyblonde.com/uploads/1/3/2/6/132681308/966571.pdfIn PDF document text
- http://files.kbgamesllc.com/uploads/1/3/0/7/130775659/tegapokimapu.pdfIn PDF document text
- http://files.uuchurchofstockton.org/uploads/1/3/1/3/131383544/3310012.pdfIn PDF document text
- http://tovomalo.slatingtonbaptist.org/uploads/1/3/0/7/130775734/5922813.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/4277/3911/files/45353359647.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2090/9718/files/77067198664.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0450/8083/8309/files/biblioteca_historica_diodoro_siculo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/4252/9695/files/pobaseg.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/4539/5359/files/33515046957.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4744/3865/files/besubomave.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5874/8837/files/taxut.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7122/5502/files/pewixozuzobupakepa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5131/0488/files/26030759409.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1766/5701/files/hoopp_realty_inc_annual_report.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8090/8951/files/96785568705.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5403/0231/files/regapep.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5554/5497/files/wuzumapuroxisakunak.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/0763/1782/files/bujejefedu.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 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005617.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5617 | 5072 bytes |
SHA-256: 1ae70f491ada19aa15915b09098307dda6930608f1c2b9a4221fcf8f8eb54b7a |
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font_01_sfnt_off0000676e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x676E | 9812 bytes |
SHA-256: 304c3ea4394cf1dcfca4975ffb72e95fc8806d27b1aca253a51204d92e6bdc9b |
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