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, pointing to `ttraff.cc`. The document body, though heavily obfuscated, contains text referencing the 'American Heart Association Provider Manual' and the malicious URL, suggesting a social engineering lure. The presence of a large number of external PDF links, many hosted on `static.usrfiles.com`, indicates a link farm designed to improve search engine ranking for malicious content. The ML classifier also strongly flagged this PDF as malicious.
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=american+heart+association+provider+manual
- https://static.usrfiles.com/ugd/726ec9_47d5bb049c0a4210b9aee3fa0091a7fb.pdf
- https://static.usrfiles.com/ugd/3f4b99_adf2f1f05bdf4e418b4ef9ee75bd3681.pdf
- https://static.usrfiles.com/ugd/3eed2b_910140aa704747dba04cb690c73953ad.pdf
- https://static.usrfiles.com/ugd/b8c837_c70b9d4424d8405bb3bda691be94c03d.pdf
- https://static.usrfiles.com/ugd/d9d1f5_1c7bbf2bea054c76854c6f0c71ab03eb.pdf
- https://static.usrfiles.com/ugd/3aca14_a8a004b5a1df451ab9fce15800df1055.pdf
- https://static.usrfiles.com/ugd/b8c837_9e3b4622226e425fbc95cc7d4cf7127b.pdf
- https://static.usrfiles.com/ugd/23b571_e7d89b3e9faa4506a6f3ae0b3aa0f410.pdf
- https://static.usrfiles.com/ugd/868401_3cc9ba7243be4593a7b010bdd528e03b.pdf
- https://static.usrfiles.com/ugd/9e41f0_aeb02e2a81e549ae97599c0abe023e11.pdf
- https://static.usrfiles.com/ugd/c5d40f_02c742f22cbe4045a27a85c14196e73f.pdf
- https://static.usrfiles.com/ugd/b8c837_d6247f754daa4a7dbd816da461b6224e.pdf
- https://static.usrfiles.com/ugd/1c8c6c_41ca40c67ff247cdb8b198cc64ae37b5.pdf
- https://static.usrfiles.com/ugd/e6092c_2557f4595f934401ba279629cd4eabdb.pdf
- https://static.usrfiles.com/ugd/b8c837_1cd3d2001f3f4b24a3b17dcfecd18bb8.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_off00005450.bin6eeb9037fc61c4b34099b481cd4937a05fd6a6d330c8c2c224f4e8e4e226262f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5450 | 5364 bytes |
font_01_sfnt_off00006659.binf6dea1cca63b295f877f03e3af374d58ed4e0cb911b10a6cf5850c6b7df35983 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6659 | 10196 bytes |
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