MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely used to obscure the final destination of the malicious payload. The document body, though heavily obfuscated, contains the same URL and a title related to skin terminology, suggesting a lure. The presence of a large number of external PDF links, many pointing to static.usrfiles.com, indicates a link farm strategy, likely for SEO poisoning to increase visibility of the malicious content.
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/wb?keyword=clue%20term%20meaning%20pertaining%20to%20the%20skin
- http://xurikaruz.notanothersupermum.com/uploads/1/3/2/3/132303382/robolatedizu-bigipajizud-bawubijibirapon-fufosonovorop.pdf
- http://kulal.starrygardenschool.com/uploads/1/3/1/1/131164497/8351413.pdf
- http://files.friendsofaptoslibrary.org/uploads/1/3/1/3/131383924/9a03211.pdf
- http://files.ponyselectbaseball.org/uploads/1/3/1/4/131452804/3515750.pdf
- https://static.usrfiles.com/ugd/b7ab08_42b5f29185e040548b9a4821e9b5aa17.pdf
- https://static.usrfiles.com/ugd/5dc3ca_ef73099e6c3d4b06992087d2717a8ab9.pdf
- https://static.usrfiles.com/ugd/85d67f_daf49a0c3dfc407bb1b532ff69a7199a.pdf
- https://static.usrfiles.com/ugd/162fe6_11b8d36193164b159e4ece80714dd5e3.pdf
- https://static.usrfiles.com/ugd/cc14e4_935ddee0175042de8da53e59c03d80f5.pdf
- https://static.usrfiles.com/ugd/2274a7_3c58ff3507ed4282810dbffc7322ebf0.pdf
- https://static.usrfiles.com/ugd/1c8c6c_a9bbe665c4bd4130a45b1c0b7b6f9f51.pdf
- https://static.usrfiles.com/ugd/8cbfce_78560c2fc0f8415bb329b124669e15d7.pdf
- https://static.usrfiles.com/ugd/1c8c1e_56fabb77095448a3adbf4d231743f784.pdf
- https://static.usrfiles.com/ugd/6cf392_66b8893f4cd142b69be598c3e24b3155.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_off00012317.bin6f5b2400a556108f3320c09b6acb311cc578545807448f6fcde63f6febdb4399 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12317 | 5204 bytes |
font_01_sfnt_off00013490.bin7ef3cf7ee083b3f437aa12ab2ee37aaeb6638ae4d5f88b8d75928df333646da1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13490 | 26288 bytes |
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