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 of which point to external PDF files hosted on static.usrfiles.com, forming a link farm. One of these links, https://ttraff.ru/wix?keyword=elf+on+the+shelf+goodbye+letter+template, is identified as a known malicious redirector. The ML classifier also strongly flagged this PDF as malicious. The document body contains garbled text but includes the same malicious URL.
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=elf+on+the+shelf+goodbye+letter+template
- https://static.usrfiles.com/ugd/c5d40f_31f02883ed3a45abb7c503f71977f0a8.pdf
- https://static.usrfiles.com/ugd/de02f3_4542aadcb8b5478d80383718fd7ebb4c.pdf
- https://static.usrfiles.com/ugd/e4a001_d0c334f79c084cb1aef3146dede4646e.pdf
- https://static.usrfiles.com/ugd/b7ab08_ebffb786bc1f44849caa5397f77b1329.pdf
- https://static.usrfiles.com/ugd/9ea91e_a8686f72cf3e4bef9c48e826fd4471f3.pdf
- https://cdn.shopify.com/s/files/1/0431/2901/2381/files/wawewopazumewavepabig.pdf
- https://cdn.shopify.com/s/files/1/0436/0300/1502/files/converting_metric_units_worksheet_grade_4.pdf
- https://static.usrfiles.com/ugd/0b46e6_983f5409cbf94fad8dc43fdea4b3b4b9.pdf
- https://static.usrfiles.com/ugd/b8c837_4435acaf8f07454098913d9b1539bec5.pdf
- https://static.usrfiles.com/ugd/e745be_6dc9814305624a7e93d685d28cf958ea.pdf
- https://static.usrfiles.com/ugd/269bb8_9ee08641534c481c98f4bd9eed5a4114.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_off00005dd9.bin88b275a329b1fa77c0bc57f01fc19d1c3291ff58ef8ca01f81d7f586b94ff8e2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5DD9 | 5392 bytes |
font_01_sfnt_off00007002.bin642f48d7df5a1c14d4c4c0c63c49cbc3427b544d4bf9c59636bd2ae7127ff004 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7002 | 10092 bytes |
font_02_sfnt_off00009289.binb50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9289 | 4324 bytes |
Open this report in the interactive analyzer, or submit your own file for analysis.