MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a prominent link disguised as a free textbook download, which redirects to a known malicious infrastructure. The ML classifier also strongly indicated maliciousness. The presence of numerous other PDF links suggests a link farm or SEO poisoning attempt to drive traffic to the malicious redirector.
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.me/wix?keyword=foundations+in+microbiology+9th+edition+pdf+free
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/b8c837_5256334a210048ee94a97f102978c2ba.pdf
- https://static.usrfiles.com/ugd/b8c837_0a35383d41c1453a8a46c4ddd7051b09.pdf
- https://static.usrfiles.com/ugd/b8c837_4ad074537707482d9ef2dda3d167778b.pdf
- https://static.usrfiles.com/ugd/b8c837_72dca2aab43849c2831309232ee23de5.pdf
- https://static.usrfiles.com/ugd/b8c837_f85d765a816a4ec080ce057d9bc9f162.pdf
- https://static.usrfiles.com/ugd/b8c837_b66bdac578ff4bfe8809dfc5a824aae7.pdf
- https://static.usrfiles.com/ugd/cd79e3_f587c41e33744f93926fb401cf7dd637.pdf
- https://static.usrfiles.com/ugd/b8c837_84cf620dcb064b84b6a80912177c186e.pdf
- https://static.usrfiles.com/ugd/b8c837_0ca8703a607c41c7a4bd67076a8dcb10.pdf
- https://static.usrfiles.com/ugd/d17951_321948676b114db78a73bcff461d58ec.pdf
- https://static.usrfiles.com/ugd/b8c837_83f05633342643548e1a060c9763ae51.pdf
- https://static.usrfiles.com/ugd/0c268c_5f8e70ae110d473dad50765941ebecbc.pdf
- https://cdn.shopify.com/s/files/1/0435/6656/3487/files/uefa_champions_league_fixtures.pdf
- https://cdn.shopify.com/s/files/1/0431/4978/7285/files/holland_code_career_test.pdf
- https://cdn.shopify.com/s/files/1/0430/9365/5716/files/zaliludi.pdf
- https://cdn.shopify.com/s/files/1/0433/4659/1903/files/94221378843.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/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000571b.bin3119a25b138c407ad3d4a4618176922dfc6d0b2b1751b69c6465b38a3b9616d2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x571B | 5924 bytes |
font_01_sfnt_off00006b1d.bin3fae8cbaf787c3a37f60163068c9c3ae3cffd2746329981c95f345bc1e44ba3e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6B1D | 9948 bytes |
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