MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF document was flagged as malicious by an ML classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/wix?keyword=hikvision+2mp+camera+bullet, which is also listed as a malicious redirector. The presence of a large number of external PDF links, many pointing to static.usrfiles.com, suggests a link farm or SEO poisoning attempt to drive traffic to malicious sites.
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=hikvision+2mp+camera+bullet
- https://static.usrfiles.com/ugd/b8c837_e62dca9eb4164cc580e4e8856dd25dcd.pdf
- https://static.usrfiles.com/ugd/de3d83_b97601ec44564ae29fe889df4ec946d7.pdf
- https://static.usrfiles.com/ugd/b8c837_28a77f0aaf4a42bf9f922650f7f0fd43.pdf
- https://static.usrfiles.com/ugd/b8c837_e05996274a114557ba240fe8438ab133.pdf
- https://static.usrfiles.com/ugd/30e015_dc4238cecf09417d8d281c3a47644c73.pdf
- https://static.usrfiles.com/ugd/b8c837_60f6ca8c0a3c476386ae334300d93b9f.pdf
- https://static.usrfiles.com/ugd/b8c837_c612aa6c3eb24ee98c48caaadba5c8bb.pdf
- https://static.usrfiles.com/ugd/2f07a1_ac535bac2de349169e9a7efb48d3b9a8.pdf
- https://static.usrfiles.com/ugd/289c5e_c8d2a842dc924d6f958d53aaea745eef.pdf
- https://cdn.shopify.com/s/files/1/0430/7763/2161/files/breaststroke_swimming_technique_for_beginners.pdf
- https://cdn.shopify.com/s/files/1/0430/3778/6266/files/congenital_syphilis_guideline__2558.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27482348981.pdf
- https://cdn.shopify.com/s/files/1/0462/1470/9402/files/66304378230.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_off00004ca3.bin1e0c3f5ae202785b31320f8b68d8992d8b7292761df944f7b063f30da5416932 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4CA3 | 5320 bytes |
font_01_sfnt_off00005e8d.binbb985df3a0c5b6a786b96973e614d6a930741907691053babc7eea7ee126de9b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5E8D | 9712 bytes |
font_02_sfnt_off00007fc7.bind1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7FC7 | 4324 bytes |
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