MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF document was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The ML classifier also strongly indicated maliciousness. The primary malicious IOC is the URL 'https://ttraff.ru/wix?keyword=stay+piano+chords+sheet+music', which is part of a redirector infrastructure. The document body is heavily obfuscated and appears to contain junk data, but the presence of multiple links to external PDFs suggests a link farm or SEO poisoning attempt to lure users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
-
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.
-
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.
-
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.
-
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=stay+piano+chords+sheet+music
- https://static.usrfiles.com/ugd/b8c837_42f546c2cd7845dba95f46381acebb02.pdf
- https://static.usrfiles.com/ugd/b8c837_dd536a2a81474067928e9b4219d4662d.pdf
- https://static.usrfiles.com/ugd/b8c837_a5ee06e698d144a9bf690d5043493013.pdf
- https://static.usrfiles.com/ugd/ce14f3_c46f466cc743423097dbf23b50005a10.pdf
- https://static.usrfiles.com/ugd/b8c837_727865dd33a7465a8431009af0051858.pdf
- https://static.usrfiles.com/ugd/b8c837_2dfc249b14ab4e81a7130869703d6bdf.pdf
- https://static.usrfiles.com/ugd/60933b_49c7fa51ef7241649c17fa1ec6d7c7e9.pdf
- https://static.usrfiles.com/ugd/097bd5_9ddf17d4e03a4de29d8b061f5d0542b6.pdf
- https://static.usrfiles.com/ugd/52b593_ba927f7e1990409bbb6472ceac776c8e.pdf
- https://static.usrfiles.com/ugd/b0b521_cfcf340a66024830aa6adb51aa78a940.pdf
- https://static.usrfiles.com/ugd/b8c837_8f3c9b208a314ac3b35194506fae5083.pdf
- https://static.usrfiles.com/ugd/b8c837_e2ee54eb1d86408fad4036e2234cd14b.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_off000048a4.bin71b3ba551a69cae5c457579ac0b346319a4d608ca3d513e916f20683666fd2b3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x48A4 | 5484 bytes |
font_01_sfnt_off00005b15.bin00deba307c922711c04f938e2d5534b3b5c29d06302ae10f20abd8978b923565 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5B15 | 10112 bytes |
Open this report in the interactive analyzer, or submit your own file for analysis.