MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains multiple embedded links, with one leading to a known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/wix?keyword=penumbra+necrologue++ita, suggesting a lure to external content. The presence of numerous links to PDF files hosted on Shopify and other platforms indicates a potential link farm or SEO manipulation tactic to distribute malicious content.
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=penumbra+necrologue++ita
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0434/0085/5706/files/44814543113.pdf
- https://cdn.shopify.com/s/files/1/0431/1564/3031/files/60759298830.pdf
- https://cdn.shopify.com/s/files/1/0440/7522/1142/files/razoruzexadosifije.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/91960476686.pdf
- https://static.usrfiles.com/ugd/f14cf6_c3eecaa4b3f0429dbb97456d5e30cb75.pdf
- https://static.usrfiles.com/ugd/e6092c_3cfbc466d6874f499beca0379244bfa6.pdf
- https://static.usrfiles.com/ugd/e2c250_1bde9ee5b8e64b9daca9f8201fb7d839.pdf
- https://static.usrfiles.com/ugd/f1d680_17a6bcfd83ad4fcb81939a3bb6e8fee4.pdf
- https://static.usrfiles.com/ugd/dd6616_e5a4f194d0bf4367b7c95cbeba03c563.pdf
- https://static.usrfiles.com/ugd/b8c837_606533199cfd48628d599bea8ca6794d.pdf
- https://static.usrfiles.com/ugd/6d45f6_2d4929e67aea44e995a7a5ae21b22686.pdf
- https://static.usrfiles.com/ugd/7ff653_f48ce86f3d574332b9db6dbb364d15d5.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/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000623d.bin790f44225c6deca1f28f8686c044306b7b1acfe457382c63d64ba75f2e4676e7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x623D | 5080 bytes |
font_01_sfnt_off0000736a.bin6639ab5c4bb760144325a606da4096615009b75a9f17e0dad438f4f405830f81 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x736A | 14952 bytes |
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