MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as an 'Ohio life insurance exam study guide'. This URL is presented within the document body and also identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The PDF also features a link farm, with numerous external PDF links, many hosted on static.usrfiles.com, suggesting a SEO poisoning or link farm tactic. The ML classifier strongly indicates 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/wix?keyword=ohio+life+insurance+exam+study+guide
- https://static.usrfiles.com/ugd/be19e1_a15d5ac9b1a34a64a5e020e68bc843c5.pdf
- https://static.usrfiles.com/ugd/b8c837_4a0d3bf25dd049388d06aee2dfef8673.pdf
- https://static.usrfiles.com/ugd/b8c837_f3b86c16dfe740c0a94601885d5d65a7.pdf
- https://static.usrfiles.com/ugd/d94ae5_d9577c05dbbf462da3e4a8fcae341871.pdf
- https://static.usrfiles.com/ugd/739437_8e1de07ad0b840839841e7dc5d4b970e.pdf
- https://cdn.shopify.com/s/files/1/0464/6354/9592/files/12043633157.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/62114329075.pdf
- https://cdn.shopify.com/s/files/1/0432/4782/9156/files/23224517919.pdf
- https://cdn.shopify.com/s/files/1/0437/0835/0615/files/60855648080.pdf
- https://static.usrfiles.com/ugd/b8c837_ef2bd8778cf849fd9c7f220d72f0503f.pdf
- https://static.usrfiles.com/ugd/b8c837_6ac85aa85a6c4456be04a1ff789b1937.pdf
- https://static.usrfiles.com/ugd/a18aa6_a9f8288671534d5e9c6cd3ff57f053ca.pdf
- https://static.usrfiles.com/ugd/fa6f14_b1edcd630f1e47c1b070d467c75cf664.pdf
- https://static.usrfiles.com/ugd/b8c837_0bc6a4492a024c3e8a63f388d20d6214.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006119.bin18219bfbb496af3158364f93558bc881daf20fb72d23247fd4a18721e97d6408 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6119 | 5512 bytes |
font_01_sfnt_off000073b2.bin9cdddd3630feafe49b03d0c414fe12392e47973f6f3f1db608686ed24270ef43 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x73B2 | 10252 bytes |
font_02_sfnt_off00009693.bin4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9693 | 4324 bytes |
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