MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
This PDF file was flagged as malicious by an ML classifier and contains numerous embedded links. One critical heuristic identified it as a PDF redirector link pointing to ttraff.com, which is known malicious infrastructure. Another heuristic identified a PDF link farm, with many links pointing to static.usrfiles.com. The document body appears to be obfuscated or corrupted, but the presence of the URL 'https://ttraff.com/wix?keyword=multi+step+fraction+word+problems+6t' within the document text and the link farm structure strongly suggest a phishing or redirection attack.
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.com/wix?keyword=multi+step+fraction+word+problems+6t
- https://static.usrfiles.com/ugd/b8c837_b5cfaea357d74801a4863968279feb0a.pdf
- https://static.usrfiles.com/ugd/b8c837_27a0d77b368d467cbf1d346bdddbaac8.pdf
- https://static.usrfiles.com/ugd/b8c837_ee79441fcde94d45a23488ab8aedfa4d.pdf
- https://static.usrfiles.com/ugd/b8c837_a11de11dcac94997b71c16250d4e173c.pdf
- https://static.usrfiles.com/ugd/5af86b_2d9b5cb6825d4234b1c68f874c8486f0.pdf
- https://static.usrfiles.com/ugd/b8c837_9a227b7e916a457b9ae8e2dbba4cf81c.pdf
- https://static.usrfiles.com/ugd/b8c837_1ac3c43eabc7466497d2b29eb1063d4c.pdf
- https://static.usrfiles.com/ugd/b8c837_5c6cbe1d631246d2b27c5c00f0925dff.pdf
- https://static.usrfiles.com/ugd/b8c837_62609fc3d8e44fb5af0221e5eaf5e002.pdf
- https://static.usrfiles.com/ugd/b8c837_61aead6d60824e048b7a574f62f2de6a.pdf
- https://static.usrfiles.com/ugd/b8c837_eb3e1e059e0749269d4556dbfeadb537.pdf
- https://static.usrfiles.com/ugd/0e2875_9b416921470b4f98b79c5494fdb5a73a.pdf
- https://static.usrfiles.com/ugd/b8c837_c2931eb0f4b647fc8cead60f5e2cafda.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_off000051fb.binc74e7e2dd85d37108ceffd342ccef6fbbeaa0c41baba6c83ec792f8ad2ff9164 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x51FB | 5692 bytes |
font_01_sfnt_off00006550.bin8da48a5357cfb460b793ec8358603db1f729772a91321e03f52760808c5c527f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6550 | 10572 bytes |
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