MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.me/pify?keyword=app+connect+vw'. Additionally, it exhibits a PDF link farm heuristic, indicating a large number of external links, with 'static.usrfiles.com' being a dominant host. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing its malicious intent.
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.me/pify?keyword=app+connect+vw
- https://static.usrfiles.com/ugd/ecec20_dae3144f11c840df92a7fb784385212f.pdf
- https://static.usrfiles.com/ugd/b8c837_9484169f27cb4bb9ba43388afdc33d1b.pdf
- https://static.usrfiles.com/ugd/9cc572_78a221bc022d44f4b11dbddcb5ca1931.pdf
- https://static.usrfiles.com/ugd/b8c837_928da8534db641c1a63a7a9cb8334c3c.pdf
- https://static.usrfiles.com/ugd/b8c837_e847a8f80fd549a3a5b5a5386cd21c87.pdf
- https://cdn.shopify.com/s/files/1/0434/1386/4602/files/bsc_nursing_application_form_2018_ruhs.pdf
- https://static.usrfiles.com/ugd/74e9cf_769491e74fae4ba2b6b79bc8c8905156.pdf
- https://static.usrfiles.com/ugd/913720_be1c8687c50a42e0ac6bd1cfc5481bc3.pdf
- https://static.usrfiles.com/ugd/d5d855_eb0b246b9cd84cf09ff4361d774ae962.pdf
- https://static.usrfiles.com/ugd/18f527_e648805552484ac2a5de3e55edf85795.pdf
- https://static.usrfiles.com/ugd/0b46e6_e9cc95b664264517b45ac93e745380c0.pdf
- https://static.usrfiles.com/ugd/50de67_37f5eeaf23fc4435a044991dde3b24e2.pdf
- https://static.usrfiles.com/ugd/7603ae_07dbdd0fb5c24fae8d43003e3c13253c.pdf
- https://static.usrfiles.com/ugd/f67134_1bcab6ea1bd54df3abd71a70cd2abbda.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_off000069ed.bin38d7dd52d87220e4b9227610991a4d79b474ad50c591bdda421ef8be30a8ac83 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x69ED | 4552 bytes |
font_01_sfnt_off0000799b.bin5df4b2147bec5e12809d4529e6a3279ec69e1ade67ca52e024fc70746cd6a253 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x799B | 10380 bytes |
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