MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a mass external link farm, with a primary malicious redirector URL identified. The document body, though garbled, contains text suggesting a lure related to downloading a practical manual for mechanics, which aligns with the malicious redirector's keyword. The ML classifier strongly indicated maliciousness, and the PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the presence of a link to known malicious infrastructure.
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.cc/wix?keyword=baixar+livro+manual+pratico+do+mecan
- https://static.usrfiles.com/ugd/b8c837_434ccc9b8f9e4b3ba382b2214af7b011.pdf
- https://static.usrfiles.com/ugd/0adedf_611c4a83df6d452bb35101b150e1bb80.pdf
- https://static.usrfiles.com/ugd/b8c837_75ab08b098444edba480403e2c7413b3.pdf
- https://cdn.shopify.com/s/files/1/0434/9476/8802/files/xudekemeloba.pdf
- https://cdn.shopify.com/s/files/1/0430/9729/2949/files/kijafesix.pdf
- https://cdn.shopify.com/s/files/1/0434/5161/3351/files/declaration_of_conformity_mdr_template.pdf
- https://static.usrfiles.com/ugd/b8c837_15b571ccc55447868505cbab9e834b35.pdf
- https://static.usrfiles.com/ugd/271e65_c6f4e763bade4d3db98365b9d15a5e26.pdf
- https://static.usrfiles.com/ugd/89064d_43188c712cd8459292e0fa304777984c.pdf
- https://static.usrfiles.com/ugd/b8c837_04d1f3a3380e4712b1ef075d87b1ab9a.pdf
- https://static.usrfiles.com/ugd/0dd040_3b5f9464e7a64b3ca90cbcffcc6df7d2.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/36726725464.pdf
- https://cdn.shopify.com/s/files/1/0431/6246/8503/files/byte_of_python.pdf
- https://cdn.shopify.com/s/files/1/0432/4347/1010/files/glossaire_des_termes_informatiques.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_off000049b2.bin4413429ecf40cf970961cd52ff3154015e483e81aadf3ec60e88478fc00e102c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x49B2 | 5216 bytes |
font_01_sfnt_off00005b5f.bin3b1f47ae9beac358b6450a66c77ba5db5aa8073606a5e6402d90c8db586f785f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5B5F | 12384 bytes |
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