MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. The ML classifier strongly indicates maliciousness. The embedded URL leads to a redirector that likely serves further malicious content, potentially a phishing page or malware download. The document body text, though heavily obfuscated, contains the URL and text that appears to be a lure for academic papers.
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=appsc+model+papers
- https://static.usrfiles.com/ugd/b8c837_614751c2c7a24e25bbcebab14ffa3923.pdf
- https://static.usrfiles.com/ugd/6908d7_c7ae208ad6364eadbed14fa51abbbce5.pdf
- https://static.usrfiles.com/ugd/b8c837_7a9900ea248a4ee1b9f7bee44bbebd19.pdf
- https://static.usrfiles.com/ugd/b8c837_27c13db946f84694b4682b724e501639.pdf
- https://static.usrfiles.com/ugd/4c76bf_18973b5136d34c6ab028dcd07940dc6a.pdf
- https://static.usrfiles.com/ugd/fa6f14_e5f67938ef6041c486ee639c02bb1011.pdf
- https://static.usrfiles.com/ugd/ca32a8_7681c9dbd98b4fd7804835dbdae8313e.pdf
- https://static.usrfiles.com/ugd/0f1814_270f0c6b9b6d452db96c14a1a623cc11.pdf
- https://static.usrfiles.com/ugd/b85eb0_783334348b184573bad5e8f958b62b89.pdf
- https://static.usrfiles.com/ugd/b8c837_c2385d517cd24c5f8a47f9ca32f2eb64.pdf
- https://static.usrfiles.com/ugd/b8c837_fcfb9e3be3f649bc813496de8b74e824.pdf
- https://static.usrfiles.com/ugd/b8c837_4655a326cd484d3082b8df47b7d8b63f.pdf
- https://static.usrfiles.com/ugd/3b47cb_3aad383fbf7b4e058490731ad12c6d94.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/
- https://static.usrfiles.com/ugd/b8c837_7a9900ea248a4ee1b9f7bee4
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00007b4b.bin8046e22696a63d05fc8a7103b44df099b4581cb3411843463560b015a65826f8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7B4B | 4760 bytes |
font_01_sfnt_off00008b62.bin8788872f9e2edd29c5f860d1dcea4514c48658f9e1618b66e26cb5b40e32b8e4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8B62 | 12564 bytes |
font_02_sfnt_off0000b3c9.binb50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB3C9 | 4324 bytes |
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