MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=murray+microbiologia+pdf+descargar+g'. Additionally, another critical heuristic indicates a PDF link farm with numerous external links, suggesting a coordinated effort to distribute malicious content. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same malicious URL.
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=murray+microbiologia+pdf+descargar+g
- https://static.usrfiles.com/ugd/b8c837_0293ed1d42d642e9af2d33260aeb818b.pdf
- https://static.usrfiles.com/ugd/b8c837_3e1279d65a5043e0b0f3c7dd1854f029.pdf
- https://static.usrfiles.com/ugd/b8c837_b403658af813476e9697034e9e0f6834.pdf
- https://static.usrfiles.com/ugd/ace02d_d1908e2e0c5a4220922ec2653ae62437.pdf
- https://static.usrfiles.com/ugd/b8c837_27c13db946f84694b4682b724e501639.pdf
- https://static.usrfiles.com/ugd/b8c837_c8cd22d591d64e009cedc85c9e5d6fd6.pdf
- https://static.usrfiles.com/ugd/b8c837_bc5f17f1c9a64ac3bf44c0439541038a.pdf
- https://static.usrfiles.com/ugd/e2b09b_168ef2b202ff45dba53a339716c48dac.pdf
- https://static.usrfiles.com/ugd/b8c837_c1bc55ce464041d79ccc42eea99d3866.pdf
- https://cdn.shopify.com/s/files/1/0432/0791/7729/files/megobebulasivudemodirej.pdf
- https://cdn.shopify.com/s/files/1/0429/6137/1290/files/xanumalemevek.pdf
- https://cdn.shopify.com/s/files/1/0439/1777/0920/files/wokadatapatumo.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_off00005009.bin5c81233ea06c1f9a3ef52e83ff6a1645b6b5d729e8e09b32531e3f3f35425275 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5009 | 5416 bytes |
font_01_sfnt_off0000627d.bin79aa43424c81b96a6cf2c85ec3341bbf87fe0cf982c9487f3bba7f919321c65b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x627D | 9896 bytes |
font_02_sfnt_off00008473.binff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8473 | 4324 bytes |
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