MALICIOUS
152
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 associated with a USPS package delivery lure. The ML classifier strongly flagged this PDF as malicious. The presence of numerous external PDF links, many hosted on static.usrfiles.com, suggests a link farm or content delivery network used to host malicious documents. The document body, though heavily obfuscated, contains the URL and keywords related to the lure.
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=usps+cd+mailer
- https://static.usrfiles.com/ugd/defcb2_6597a023bf474a7abb8b0852c999b754.pdf
- https://static.usrfiles.com/ugd/314c35_a002ab4baeef4af9952baa39dc7c081c.pdf
- https://static.usrfiles.com/ugd/e2f197_d2917d1e4ca34a22b8371ce612c57615.pdf
- https://static.usrfiles.com/ugd/8de238_84bf5b991223452291147589afd14150.pdf
- https://static.usrfiles.com/ugd/b8c837_f4f2d3a8e00f4a29adb9ef6f804fe0dd.pdf
- https://static.usrfiles.com/ugd/b8c837_9624d14830c74476a1917027b3de8b7f.pdf
- https://cdn.shopify.com/s/files/1/0432/3062/5947/files/injury_report_earl_thomas_seattle_seahawks.pdf
- https://cdn.shopify.com/s/files/1/0432/6971/8182/files/zevapibegonebitaruwajeta.pdf
- https://static.usrfiles.com/ugd/20d83a_d3474a508a8c45d6b7069d97ec4b1e2e.pdf
- https://static.usrfiles.com/ugd/ea2f88_8fe9de22f03b43959a105f122a674f2a.pdf
- https://static.usrfiles.com/ugd/3eed2b_c901d09a966a4f7aa14b7fcccfe62942.pdf
- https://static.usrfiles.com/ugd/769f78_99b95eec94fe4028af1d487e119d5a29.pdf
- https://static.usrfiles.com/ugd/08fe48_13b50a0c6c244547ad3fd0f8d39533a7.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_off00004fad.bin896f9beb09a37e57270767046a8ba101e0bcfa0ee44c5fc7797c9711ab41eb80 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4FAD | 4700 bytes |
font_01_sfnt_off00005f97.bin9e056b7d468437812d1718ac32f86cf1a49d276e273d2d8275282ca04bf5369f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5F97 | 10008 bytes |
font_02_sfnt_off000081ea.bin1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x81EA | 4324 bytes |
Open this report in the interactive analyzer, or submit your own file for analysis.