MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The embedded URL 'https://ttraff.ru/wix?keyword=angry+birds+movie+soundtrack' is identified as a known malicious redirector. The document body, though heavily obfuscated, contains this URL and other links pointing to a large number of PDFs hosted on 'static.usrfiles.com', indicating a link farm strategy. The ML classifier also strongly indicated maliciousness.
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=angry+birds+movie+soundtrack
- https://static.usrfiles.com/ugd/5b604d_1484780163f0482e98b338e1f1ff1618.pdf
- https://static.usrfiles.com/ugd/e73fea_43a2379746eb439b8857dbc7cc019141.pdf
- https://static.usrfiles.com/ugd/e2f7e1_7293d82a5f4f4c99bde41b1a1d1a4357.pdf
- https://static.usrfiles.com/ugd/b8c837_5ab1b82ed94e4ee587a8b5fe8d80a4df.pdf
- https://static.usrfiles.com/ugd/b8c837_7bef9d7553bf483db6b99ee3ce34d3a3.pdf
- https://static.usrfiles.com/ugd/405339_b3106722545348558d4b2d92f6968df0.pdf
- https://static.usrfiles.com/ugd/2274a7_671ad0b14bbb46deb78b5b7fd7affbd2.pdf
- https://static.usrfiles.com/ugd/3ceeb9_9cde6cac3a2541e5abae30764bbc0a14.pdf
- https://static.usrfiles.com/ugd/ce5d00_d6d2a7faa5be4a958eda0c9deb1f79a4.pdf
- https://static.usrfiles.com/ugd/12dc78_7c36e2e4b1e649c4b5dce0518940daa9.pdf
- https://static.usrfiles.com/ugd/b8c837_0b7039da0d7347e782c7dc53500da723.pdf
- https://static.usrfiles.com/ugd/3b7182_a9847ca3f3074c7ea67ec4226d3e0f2c.pdf
- https://static.usrfiles.com/ugd/db93e9_8730bec648764118a61ad445221aa9bb.pdf
- https://static.usrfiles.com/ugd/ca9b0a_d45f3a33206042b3b1a69b95166de731.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_off00009883.binbac3e7e43268baab32b6f8bffe57fccdc0ba875cbd8c0bfcbd8f11a9128157f9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9883 | 5580 bytes |
font_01_sfnt_off0000ab7e.bin1b77484ba9ede38aa6cfe8a78fba1b5eef501c9fd6d1057bd721e914285954c7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAB7E | 10736 bytes |
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