MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a significant number of embedded links, forming a link farm. One of these links, https://ttraff.club/wix?keyword=angular+8+reactive+forms+two+way+binding, points to known malicious redirector infrastructure. The document body is heavily obfuscated but appears to contain references to the malicious URL and other benign-looking PDFs hosted on static.usrfiles.com, suggesting a lure to disguise the malicious redirector. The ML classifier strongly supports the malicious verdict.
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.club/wix?keyword=angular+8+reactive+forms+two+way+binding
- https://static.usrfiles.com/ugd/91e123_60af25afb58f49b9b9285bca9f4d439a.pdf
- https://static.usrfiles.com/ugd/35c6e2_68907a83b3384397ad9f3986afe2cedc.pdf
- https://static.usrfiles.com/ugd/69b86f_0a26bc6fb99943e4966dfcfac1997243.pdf
- https://static.usrfiles.com/ugd/0010c8_cfdfbd73da2a42a18ddb286e09cc90e5.pdf
- https://cdn.shopify.com/s/files/1/0429/6274/7545/files/rofilaxupunif.pdf
- https://cdn.shopify.com/s/files/1/0431/6191/1458/files/62211767753.pdf
- https://static.usrfiles.com/ugd/c1de29_259e677ccc8c4f42ab1396b2952a0ab3.pdf
- https://static.usrfiles.com/ugd/dba42a_ce20ec97068246ae91f98a94ee4606f9.pdf
- https://static.usrfiles.com/ugd/345929_51903153b3954dd8927b46ef74f3dc11.pdf
- https://static.usrfiles.com/ugd/9219f8_2a38fcdb82b8474baa84e6e18f465a4b.pdf
- https://static.usrfiles.com/ugd/136d07_b2efa2a87edc470e849332c945d0431f.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_off00007631.binea079a5c79f59ec2fc6354043a9a1055d3dc9cfb52146a4b8f3ab97dd0e602cc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7631 | 5800 bytes |
font_01_sfnt_off000089ea.bin28725053cecc17ccc4a004bf08df4cbca52581d89ded0959c56a80e98c8f3e11 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x89EA | 10372 bytes |
font_02_sfnt_off0000ad67.binb50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAD67 | 4324 bytes |
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