MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was flagged as malicious by a machine learning classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the primary malicious URL. The presence of a large number of external PDF links, many pointing to `static.usrfiles.com`, suggests a link farm intended to obscure the ultimate destination and potentially engage in SEO abuse for malicious purposes.
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.com/wix?keyword=o+alienista+em+quadrinhos+resumo
- https://static.usrfiles.com/ugd/b8c837_b54901a16fa140ae866ad1d87633440b.pdf
- https://static.usrfiles.com/ugd/b8c837_2c5c661847a24ede85af15664830ebeb.pdf
- https://static.usrfiles.com/ugd/e2c6c1_cb90f37337ae448c9bdd6be5841933fc.pdf
- https://cdn.shopify.com/s/files/1/0435/0358/3384/files/mexas.pdf
- https://cdn.shopify.com/s/files/1/0427/6404/2396/files/10516899614.pdf
- https://static.usrfiles.com/ugd/b8c837_c60a33eac6584991969a75197cdb0190.pdf
- https://static.usrfiles.com/ugd/f1780b_aecbf88a9df64ccea496d1da0aa60306.pdf
- https://static.usrfiles.com/ugd/40b9e6_b80f4dc3faf142afb9df1a0974a9272c.pdf
- https://static.usrfiles.com/ugd/b8c837_0a498d95f1c549b0a84515fce544a631.pdf
- https://static.usrfiles.com/ugd/de3d83_5abb8288f5cf4884b17bea6c699c70a7.pdf
- https://cdn.shopify.com/s/files/1/0436/9242/5384/files/essential_university_physics_2nd_edition.pdf
- https://cdn.shopify.com/s/files/1/0432/6552/3862/files/admiralty_charts_catalogue.pdf
- https://cdn.shopify.com/s/files/1/0431/9599/0175/files/rijaruwewudajabafeve.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_off0000737e.bin72485baae3f63baa96f6ad6b7e85f9899d8c17730b16b7968f435e68c6b91eb6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x737E | 5220 bytes |
font_01_sfnt_off0000850a.bin9f0b76aa091312def120abd807ae1a3cb47e08bba757384c16e0b659350512ab |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x850A | 12296 bytes |
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