MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged as malicious by a machine learning classifier and contains numerous embedded links. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/wix?keyword=sorceress+guide+bdo'. Another critical heuristic indicated a PDF link farm, with a large number of external links, many hosted on 'static.usrfiles.com'. The document body contains obfuscated text and the identified URLs, suggesting a lure to external 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/wix?keyword=sorceress+guide+bdo
- https://static.usrfiles.com/ugd/b8c837_b012b1bd8bbb4e509d7b0874d4704213.pdf
- https://static.usrfiles.com/ugd/b8c837_2d9469c4bf734b7f9c77c4750366b73d.pdf
- https://static.usrfiles.com/ugd/b8c837_844f99191be048459ebf93f46e03fc78.pdf
- https://static.usrfiles.com/ugd/ab922d_2135a3efacd345b7b914f341c5e0ad22.pdf
- https://cdn.shopify.com/s/files/1/0431/9664/5538/files/bipuxine.pdf
- https://cdn.shopify.com/s/files/1/0434/8651/1264/files/kimoti.pdf
- https://cdn.shopify.com/s/files/1/0431/8003/2160/files/fabekepuvikeselebu.pdf
- https://cdn.shopify.com/s/files/1/0437/2663/5157/files/che_guevara_biography_book.pdf
- https://static.usrfiles.com/ugd/b8c837_743a26bed5e847c9bbbd96eeb19aa4b5.pdf
- https://static.usrfiles.com/ugd/e02969_c6a31e4b6c7a4174914fd24f218c7c65.pdf
- https://static.usrfiles.com/ugd/d5d855_b6abcdd570214d2c8991b4e17a03837e.pdf
- https://static.usrfiles.com/ugd/b8c837_013be2fdc21c4e9b97afb638a87075e5.pdf
- https://static.usrfiles.com/ugd/b8c837_20270b3f2a6b40f6bc5834ab91f0164d.pdf
- https://static.usrfiles.com/ugd/7ea8bb_136132a490ad4e3f926e52f6d34e89dd.pdf
- https://static.usrfiles.com/ugd/b8c837_40cc6f6f8651485995aa7e927b10234e.pdf
- https://static.usrfiles.com/ugd/b8c837_f5b1d4ade9bb4405915c7c4c70ea93ad.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_off0000a619.bin31cc04c0737a6e87ffdbeda7e473e6dcec5345863553b44ee7777ed5eee6e475 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA619 | 5108 bytes |
font_01_sfnt_off0000b772.bin7c0f91a69df898cd9d1a32e6c77698df8230f944d53aa8c5bc8aba51b0a19d0e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB772 | 10428 bytes |
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