MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
This PDF file was flagged as malicious by an ML classifier and contains a large number of embedded links to external PDF files, many hosted on Shopify. One of these links, 'https://ttraff.ru/pify?keyword=drug+excipient+compatibility+study+guidelines', points to a known malicious redirector. The document body itself is heavily obfuscated but appears to contain the same URL. The primary attack pattern involves luring users to malicious infrastructure through a link farm.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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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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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=drug+excipient+compatibility+study+guidelines
- http://dirimita.nationalroadchurchofchrist.org/uploads/1/3/0/9/130969329/b3b37c6b7e6acb.pdf
- http://files.26anderbycreek.com/uploads/1/3/1/4/131483098/7724809.pdf
- https://cdn.shopify.com/s/files/1/0436/9183/5547/files/96560707158.pdf
- https://cdn.shopify.com/s/files/1/0434/9978/2309/files/53064336921.pdf
- https://cdn.shopify.com/s/files/1/0429/2771/8567/files/wotupereduwekon.pdf
- https://cdn.shopify.com/s/files/1/0432/1912/4382/files/16380285900.pdf
- https://cdn.shopify.com/s/files/1/0437/0500/8293/files/16430137246.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37394074323.pdf
- https://cdn.shopify.com/s/files/1/0439/3009/1688/files/bond_energy_calculation_chemguide.pdf
- https://cdn.shopify.com/s/files/1/0431/9376/1956/files/rendering_in_pen_and_ink.pdf
- https://cdn.shopify.com/s/files/1/0433/7677/1224/files/sezajugu.pdf
- https://cdn.shopify.com/s/files/1/0448/2321/6290/files/xukeminilonozuxasofu.pdf
- https://cdn.shopify.com/s/files/1/0429/4171/0499/files/livros_sobre_alimentao_saudavel.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00009733.bin5a8d2b3cf708004c34d2a7cfe6759f14774b5d65e7cc031c3cf04602fc463da5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9733 | 5704 bytes |
font_01_sfnt_off0000aa8e.bin7caf22d065801a2b37e337d04acdbcc1d452e455b386f9dced1fdb003f2dae01 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAA8E | 10328 bytes |
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