MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains embedded links, one of which, https://ttraff.ru/wix?keyword=cash+flow+forecast+exam+questions+and+answers, is identified as a malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to 'cash flow forecast exam questions and answers'. The presence of numerous external PDF links, many hosted on static.usrfiles.com, suggests a link farm or SEO poisoning tactic to distribute the malicious content. The ML classifier strongly flagged this PDF as malicious.
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=cash+flow+forecast+exam+questions+and+answers
- https://static.usrfiles.com/ugd/8c2e83_e2fd51f5663d496db407c6aedea0c6c6.pdf
- https://static.usrfiles.com/ugd/dfb5f8_f15f99feb6c94567b44735a27e6c5f4d.pdf
- https://static.usrfiles.com/ugd/45e30f_1929cddc6bd54f2c8ec27a0f1f30501b.pdf
- https://static.usrfiles.com/ugd/7f929b_06c0f5ee4eb14fe2a3a175e0b85f7dce.pdf
- https://static.usrfiles.com/ugd/2f07a1_b535be3eb8f84ef5ac2f8878d139bc6b.pdf
- https://static.usrfiles.com/ugd/de65f7_761adc0e19ed4af3932ee6288cee3437.pdf
- https://static.usrfiles.com/ugd/f2ef67_1e0aec437afa4061a8d213eb6c752016.pdf
- https://static.usrfiles.com/ugd/13ae68_e99ccfd02a6f41009226f3f312e6ed24.pdf
- https://static.usrfiles.com/ugd/f65175_0de632175fa44753a2e051749869153d.pdf
- https://cdn.shopify.com/s/files/1/0430/0252/7895/files/7014081379.pdf
- https://cdn.shopify.com/s/files/1/0437/5393/0901/files/genetically_inherited_diseases.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_off00005ad6.bin9eeaaa0020aa656466f7638f506f843193e4cf7b2dbde57d72c6859075b8e643 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5AD6 | 5452 bytes |
font_01_sfnt_off00006d4c.binb5cb973fe88ff7b3c46bed9d9b577395908a5837dd2b23bd3c6a6603d2477c75 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6D4C | 10548 bytes |
font_02_sfnt_off0000915a.bin7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x915A | 4324 bytes |
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