MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.001 Malicious Link
The PDF contains a link to a known malicious redirector infrastructure, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also strongly flagged this PDF as malicious. The embedded URL points to a page designed to lure users with 'grade 2 reading comprehension' content, which then redirects to a malicious site.
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.ru/wix?keyword=grade+2+reading+comprehension
- https://static.usrfiles.com/ugd/b8c837_7eb12e43ac1a4dfba1729cfb09986dba.pdf
- https://static.usrfiles.com/ugd/f515ca_4412d9caf81b4e73b6ac3263205db1d1.pdf
- https://static.usrfiles.com/ugd/b8c837_972a347c37134841bd889e0d19d56688.pdf
- https://static.usrfiles.com/ugd/c7ef1a_6603ef0782ca425abe5af0ab0030a0bb.pdf
- https://static.usrfiles.com/ugd/3aee12_8cfbaa69963e4a1a846db5de98efe34c.pdf
- https://static.usrfiles.com/ugd/7198c1_11a8dcb8d2da4ca4b1d6f6adafd668be.pdf
- https://static.usrfiles.com/ugd/c8a981_6c36ffd6bae94c7aba1dfa7cf286841c.pdf
- https://static.usrfiles.com/ugd/b8c837_d76afc95570843bbb83e292015836584.pdf
- https://cdn.shopify.com/s/files/1/0461/6129/7560/files/spot_the_difference_printable_black.pdf
- https://cdn.shopify.com/s/files/1/0430/6403/3429/files/xikofumuve.pdf
- https://cdn.shopify.com/s/files/1/0437/0399/2485/files/bixovekimogofijowakor.pdf
- https://cdn.shopify.com/s/files/1/0437/6595/6759/files/sejarah_belanda_masuk_ke_indonesia.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/
- https://static.usrfiles.com/ugd/b8c837_7eb12e43ac1a4dfb
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00007746.bin701603a2ef46619541645aa664faf7ccdc6b90b64e14317b7a4894bf15a5be9b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7746 | 5620 bytes |
font_01_sfnt_off00008a3d.bin1f258f59a0d5f19546095ebf7c15b93af5f08381dbcee90701b99865e70c7e9b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8A3D | 10036 bytes |
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