MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains multiple embedded URLs, with a critical heuristic firing indicating a redirector link to a known malicious domain. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains references to the malicious URLs, suggesting a lure to external malicious content. The primary attack pattern involves redirecting the user to malicious infrastructure.
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://cctraff.ru/strik?keyword=arvo+part+fratres+sheet+music+pdf
- https://site-1041090.mozfiles.com/files/1041090/sabosowopijamu.pdf
- https://site-1040174.mozfiles.com/files/1040174/weperokabeveduseb.pdf
- https://site-1037081.mozfiles.com/files/1037081/favejoxiwigibajumajodezaf.pdf
- https://site-1036742.mozfiles.com/files/1036742/57757257649.pdf
- http://files.realfeelings.net/uploads/1/3/0/8/130873840/kovinidaza.pdf
- http://files.fgcschool.org/uploads/1/3/1/0/131071127/9ff573257d5748.pdf
- http://files.shannonrobertsmith.com/uploads/1/3/0/8/130813420/4260529.pdf
- http://files.beershousing.com/uploads/1/3/0/8/130814868/49e7aed.pdf
- http://nuzagoj.crawcainellc.com/uploads/1/3/2/6/132681579/marazekirifu.pdf
- https://uploads.strikinglycdn.com/files/8b982f43-7a71-45c8-80e6-9411341aeb69/todibabazek.pdf
- https://uploads.strikinglycdn.com/files/e55f287f-8d75-4c4b-9c68-85486c54f551/56163000455.pdf
- https://uploads.strikinglycdn.com/files/ae35473b-2caf-43d1-95ef-5288b2c93c0f/41805177260.pdf
- https://uploads.strikinglycdn.com/files/b970d027-d473-48be-89db-124f12ab39bd/zinarabeditipejevonilur.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00004727.bin6e63c6282fa3b3eeb73224568fce0984470d067d68966f4f5463cd3eb88d39f5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4727 | 5188 bytes |
font_01_sfnt_off000058d4.binf923ccc423e8e2468818164cac3f6722080349f6fdd9a274d43b77f55a22c7de |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x58D4 | 9432 bytes |
font_02_sfnt_off0000791f.bin1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x791F | 4324 bytes |
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