MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Anatomy and Physiology for Dummies workbook' and the malicious URL. This suggests a social engineering lure to redirect the user to a malicious site. The presence of numerous PDF links, many pointing to Shopify and static.usrfiles.com, indicates a link farm strategy, likely to obscure the primary malicious destination.
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=anatomy+and+physiology+for+dummies+workbook
- https://cdn.shopify.com/s/files/1/0428/3308/4575/files/84938928899.pdf
- https://cdn.shopify.com/s/files/1/0432/2358/0830/files/88943075876.pdf
- https://cdn.shopify.com/s/files/1/0428/5438/3782/files/amadeus_booking_system.pdf
- https://cdn.shopify.com/s/files/1/0433/0278/1083/files/circus_1_64_bit.pdf
- https://static.usrfiles.com/ugd/b8c837_6d928d30a28b4f8c87529791b03cfff4.pdf
- https://static.usrfiles.com/ugd/b8c837_165395e032fc4224bbf43cdaffa0df0d.pdf
- https://static.usrfiles.com/ugd/b8c837_a2f640f340c6440aaa326855df987f29.pdf
- https://static.usrfiles.com/ugd/b8c837_f21874f4e02c488e9fd7f7abb3329ddd.pdf
- https://static.usrfiles.com/ugd/b8c837_ffee06910d8b4c089bd896cc3b6c75a7.pdf
- https://static.usrfiles.com/ugd/b8c837_ba8a1ac2bf444e3cbfaadd51892c3988.pdf
- https://static.usrfiles.com/ugd/b8c837_70e854ce6a3d4db89aedaaf136a267a3.pdf
- https://static.usrfiles.com/ugd/b8c837_6f843f2230d04802a9bf72260ef7aaef.pdf
- https://static.usrfiles.com/ugd/b8c837_17deed89015940d9a6f183a05e92f7a5.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_off00006306.binf4e3a1e8bf542b27d81bf71c3aefe0b011b930f606baa6e987117b7ffc25bb08 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6306 | 5844 bytes |
font_01_sfnt_off000076c9.bina64298cbe94abb51db5b2ba30d829e2d2d12e00f0bd0fbcda4d83e9f265a6153 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x76C9 | 10788 bytes |
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