MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a significant number of embedded links, identified as a PDF link farm. One of the primary links points to a known malicious redirector, ttraff.ru. The ML classifier strongly indicates maliciousness. The document body contains obfuscated text and a URL that appears to be part of the link farm. The primary attack pattern is likely to be SEO manipulation or redirection to malicious content.
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=anatomia+y+fisiologia+pancreas+pdf
- http://files.robindbruce.com/uploads/1/3/2/8/132815002/3148951.pdf
- http://files.orchid-avenue.net/uploads/1/3/0/7/130776049/23acaa.pdf
- http://files.tutor.ifljumpstart.com/uploads/1/3/0/7/130775102/d29d501d.pdf
- http://files.valleypetservices.net/uploads/1/3/2/7/132712324/jowigobulatezuberizi.pdf
- http://files.pain.euroconferences.org/uploads/1/3/1/0/131070754/5863675.pdf
- https://cdn.shopify.com/s/files/1/0435/3343/5029/files/40860708880.pdf
- https://cdn.shopify.com/s/files/1/0428/7679/7081/files/dedem.pdf
- https://cdn.shopify.com/s/files/1/0431/5804/4823/files/order_of_the_stick.pdf
- https://cdn.shopify.com/s/files/1/0430/6763/7917/files/72362805269.pdf
- https://cdn.shopify.com/s/files/1/0437/7473/8586/files/15089928045.pdf
- https://cdn.shopify.com/s/files/1/0428/7945/1295/files/49622577688.pdf
- https://cdn.shopify.com/s/files/1/0433/9322/0758/files/rokuk.pdf
- https://cdn.shopify.com/s/files/1/0430/7353/6149/files/bokeretakedosuzirenaj.pdf
- https://cdn.shopify.com/s/files/1/0430/2998/7489/files/56010966947.pdf
- https://cdn.shopify.com/s/files/1/0432/9455/6324/files/pt_cruiser_repair_manual.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_off00007500.bin226a33f5fe8a4a4ed3e869df9f2e1ecf41d49d559add24e1ab0b625c8f1ad4a8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7500 | 5564 bytes |
font_01_sfnt_off000087e7.bind7931ffe3dacfabcf08c55a799cf98bf647cf0b482275d965346a07501c1a77d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x87E7 | 10672 bytes |
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