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, disguised as a user manual. The ML classifier strongly indicated maliciousness. The document body, though heavily obfuscated, contains text related to 'Back- ups xs 1500 user manual' and includes the malicious URL, reinforcing the lure. The presence of numerous links to external PDFs, many hosted on static.usrfiles.com, suggests a link farm or SEO poisoning tactic to increase visibility.
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.link/wix?keyword=back-+ups+xs+1500+user+manual
- https://static.usrfiles.com/ugd/e8506d_7fb3171f92e840f2a8cfaf748b432970.pdf
- https://static.usrfiles.com/ugd/9cb927_fb6d96c12981484780fefee41319da1d.pdf
- https://static.usrfiles.com/ugd/3ab5ed_e3b38571eb4446dea3a1b335f8f26942.pdf
- https://static.usrfiles.com/ugd/7f929b_4406406c47124256951aa51906766124.pdf
- https://static.usrfiles.com/ugd/7a13df_ae9fe0cfbcad4bd3952faebac2d4ef27.pdf
- https://static.usrfiles.com/ugd/7d21c0_49c33ba555804372985b761c314bd394.pdf
- https://cdn.shopify.com/s/files/1/0433/7316/6744/files/zurareronujosomibul.pdf
- https://cdn.shopify.com/s/files/1/0433/0301/0459/files/iq_test_online_free_with_answers.pdf
- https://cdn.shopify.com/s/files/1/0430/3768/7962/files/futon.pdf
- https://static.usrfiles.com/ugd/a3b54b_f2fd2db9b6dd4e279252116e7902e7aa.pdf
- https://static.usrfiles.com/ugd/eed56f_c9e2ff5f26864e45a6be30a735291d86.pdf
- https://static.usrfiles.com/ugd/c34aa9_70b00cfe5f59442bb3bf4799c7d12402.pdf
- https://static.usrfiles.com/ugd/f6a907_a4e0235e1bb447cfbc1dab24de6a78d0.pdf
- https://static.usrfiles.com/ugd/b8c837_4fafe1556de04878b0877aa3f90d2071.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_off00004c5a.bin59000dc0c3fe8126b48f9cf83d1a4514697acf419dd1c1a39adbaacd7ae00307 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4C5A | 5608 bytes |
font_01_sfnt_off00005f6e.bine20fc5b7afc92080847cc122130e19343a11a18639ad798aafacd5fae8abfc44 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5F6E | 10080 bytes |
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