MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a link to a known malicious redirector, ttraff.me, which is likely used to deliver a secondary payload or redirect to a phishing site. The document body, though heavily obfuscated, contains the same URL and appears to be a lure for a 'carnivore herbivore omnivore worksheet'. The presence of numerous links to static.usrfiles.com, while flagged as benign, suggests a link farm or SEO poisoning tactic to improve the ranking of the malicious link. The ML classifier strongly supports the malicious nature of this PDF.
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=carnivore+herbivore+omnivore+worksheet+pdf
- https://static.usrfiles.com/ugd/cbe7f7_2122ee2bfa274e759963060cb85cce1f.pdf
- https://static.usrfiles.com/ugd/b8c837_893dac0340ab4e1f8b41f172dcd4a74f.pdf
- https://static.usrfiles.com/ugd/d5d855_848c35107ab447bfa3a05884d29b9903.pdf
- https://static.usrfiles.com/ugd/b8c837_471ef8e33f964ebba8d3aa96f8b02e83.pdf
- https://static.usrfiles.com/ugd/b8c837_fe087dee0ac440b78ff6ddd6c68974aa.pdf
- https://static.usrfiles.com/ugd/80bfa9_e1173089481b4749929f27a03a12ed8b.pdf
- https://static.usrfiles.com/ugd/7ea8bb_8f79bc417db747b187c10cb5003ab067.pdf
- https://static.usrfiles.com/ugd/b50c55_11d7a1d52ed2457caade3089fc9a1637.pdf
- https://static.usrfiles.com/ugd/b8c837_2dfd60b35f3e44b8b92fc60f917c2efa.pdf
- https://static.usrfiles.com/ugd/f3ecbe_d944e39aee224a02bfb22a0820dc1d05.pdf
- https://static.usrfiles.com/ugd/93971e_f7dc186cd67c4cb3a0e89f4e1af11a67.pdf
- https://static.usrfiles.com/ugd/cc03df_16b3b12fd5584de090e583a9cbcf7557.pdf
- https://static.usrfiles.com/ugd/a474dd_7a53099b3e3f485a897095528287b1ee.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_off00004523.bin4a184b3167f3767bfcb894951384e677b0c5d4ad3bbc8eec9e35cd59eb7afbd0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4523 | 5508 bytes |
font_01_sfnt_off000057c2.bin57e1c74ec1c0bc4b73608f62a0191e393e47ce528ce3ef1613a8f5bd04b5826b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x57C2 | 9752 bytes |
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