MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links, many pointing to what appears to be a link farm designed to host SEO-optimized PDFs. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'ttraff.ru', which is used to obscure the final malicious destination. The ML classifier also strongly indicated maliciousness.
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=survey+of+clustering+algorithms+pdf
- http://files.shiragirlschoir.org/uploads/1/3/0/9/130969811/5364685.pdf
- http://files.vichiswim.com/uploads/1/3/1/4/131406749/tizisazeto.pdf
- http://jiratit.pureintegrityverified.org/uploads/1/3/1/8/131856772/bopifevatuganijag.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0432/6031/3763/files/65986427469.pdf
- https://cdn.shopify.com/s/files/1/0430/9087/0423/files/biteloganalabizevese.pdf
- https://cdn.shopify.com/s/files/1/0437/6811/9445/files/mesarifitelibuvarapifumi.pdf
- https://cdn.shopify.com/s/files/1/0431/7013/6218/files/limizezevotigikevimef.pdf
- https://cdn.shopify.com/s/files/1/0430/7091/4717/files/bebuluboforesotarita.pdf
- https://cdn.shopify.com/s/files/1/0427/9477/8791/files/99274556333.pdf
- https://cdn.shopify.com/s/files/1/0429/5704/5913/files/limikujebobiwonidaramopex.pdf
- https://cdn.shopify.com/s/files/1/0430/0885/2117/files/52359770589.pdf
- https://cdn.shopify.com/s/files/1/0432/2135/2606/files/11537038644.pdf
- https://cdn.shopify.com/s/files/1/0437/0356/6486/files/3075875106.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/botolewapaniwid.pdf
- https://cdn.shopify.com/s/files/1/0435/2219/5608/files/revelation_road_4.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/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000979a.bin61c2345b126334baa35fd66b46bbd05ed08b332a6ac0164e738238e72d3e2dc4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x979A | 5832 bytes |
font_01_sfnt_off0000ab5e.bin459ccf3af53443c5bf20d1603724b99c5a34838e980fd90d8f6aff9eb83cf19d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAB5E | 10196 bytes |
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