MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
T1059.001 PowerShell
The PDF contains a direct link to a known malicious redirector at ttraff.ru, and also hosts a large number of other PDF files on static.usrfiles.com, suggesting a link farm or content distribution network for malicious purposes. The ML classifier strongly indicated maliciousness, and the PDF structure itself points to malicious redirection and link farming.
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=heather+reynolds+new+jersey
- https://static.usrfiles.com/ugd/a76634_036db02bc422467186fbecd96ec403d4.pdf
- https://static.usrfiles.com/ugd/b8c837_440639ac48aa415889b8eed6d5e7fc38.pdf
- https://static.usrfiles.com/ugd/b8c837_8f270386712642d7ab246af03b1606e4.pdf
- https://static.usrfiles.com/ugd/cf79db_b55f98ec204742d3b5d938e49598e429.pdf
- https://static.usrfiles.com/ugd/a382ee_a93993ba72e94e8d999e1f8b27cb245b.pdf
- https://static.usrfiles.com/ugd/eb6612_6d24add3297d43f094282d1580046642.pdf
- https://static.usrfiles.com/ugd/b48b60_5f877377da0a4a3abf30fa8bdda93a05.pdf
- https://static.usrfiles.com/ugd/73f3b0_bef37fa5e58c45ffae34033ee5247d96.pdf
- https://static.usrfiles.com/ugd/0df15e_3459729eab064292bdd70fa4a7c3f0f7.pdf
- https://static.usrfiles.com/ugd/5be868_c1f622ec825f475f942605a6ef011c31.pdf
- https://static.usrfiles.com/ugd/79e0dc_dbf2de995be2404895bf39694c051767.pdf
- https://static.usrfiles.com/ugd/0e2875_fec7718f3c684ac18100e1280134784c.pdf
- https://static.usrfiles.com/ugd/529dbf_964da532af404702835c440a190adc2b.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_off00005dcd.bin7fdb72a87b7bc6ad2e61dc8409b05dce78173f39cf47fce5a2bdb6439437b663 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5DCD | 5144 bytes |
font_01_sfnt_off00006f50.bin97771a71b79ff3e10bfa42ff29f89cae3f56e1bafe721d6114901668084ae6be |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6F50 | 4900 bytes |
font_02_sfnt_off000080d0.binf9a3432f6b2b8d2b3ad13c1efdcc56c8d9a606ed48b6172d01a8313e4ef8dd4d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x80D0 | 10636 bytes |
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