MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of embedded links, many pointing to a link farm hosted on static.usrfiles.com, which is indicative of SEO poisoning or link manipulation. The primary malicious link, ttraff.com, is identified as a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wix?keyword=brock+biology+of+microorganisms+13+e', suggesting a lure to a malicious site disguised as a book search result.
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=brock+biology+of+microorganisms+13+e
- https://cdn.shopify.com/s/files/1/0428/9737/5388/files/54790586223.pdf
- https://cdn.shopify.com/s/files/1/0433/9446/5948/files/marshall_and_swift.pdf
- https://cdn.shopify.com/s/files/1/0432/7079/9510/files/topojuzisidoti.pdf
- https://cdn.shopify.com/s/files/1/0437/7945/7173/files/food_and_beverage_manager_interview_questions_and_answers.pdf
- https://static.usrfiles.com/ugd/f63f29_532756516b994d9aa6a2a34e43ab8eaf.pdf
- https://static.usrfiles.com/ugd/b8c837_3b48bc90b04548f5aeea4302140446c2.pdf
- https://static.usrfiles.com/ugd/defdb4_c0eff3e0c87549d58bea071b56148f05.pdf
- https://static.usrfiles.com/ugd/d55797_49d57c062920409199247891579327aa.pdf
- https://static.usrfiles.com/ugd/f09a9d_325c817233344978a6a5cf5ce4bfd198.pdf
- https://static.usrfiles.com/ugd/88a84f_75d0523ba63c4b0f93a8246ee0c7fa2d.pdf
- https://static.usrfiles.com/ugd/9ea9b6_49eeb683b88a47c7a21c05a7681a147d.pdf
- https://static.usrfiles.com/ugd/b8c837_794720be077449388cd86d87b8f395c3.pdf
- https://static.usrfiles.com/ugd/50de67_2cac5df05ccf43f98330b8e4b28c722e.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_off00006468.binfc62ae0cd206ce50ab384cdc21cb0fbfd401d47622924de5e4345468a7204831 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6468 | 5772 bytes |
font_01_sfnt_off0000780e.bindb4960558909cbefbe762700bc2d68700e6308d64f14b76edee6637386d07bcd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x780E | 9776 bytes |
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