MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a prominent link to 'ttraff.ru', identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to an 'Aggiornamento android oreo' (Android Oreo Update), suggesting a social engineering lure. The presence of numerous external PDF links, many pointing to benign Shopify domains, indicates a link farm strategy, likely to improve search engine ranking for malicious content or to obscure the primary malicious URL. The ML classifier strongly flagged this PDF as malicious.
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=aggiornamento+android+oreo
- https://cdn.shopify.com/s/files/1/0460/2920/9759/files/automation_in_clinical_biochemistry_laboratory.pdf
- https://cdn.shopify.com/s/files/1/0434/0213/3656/files/wusevamebonuwalitat.pdf
- https://cdn.shopify.com/s/files/1/0432/9875/0629/files/tesamelapuposifab.pdf
- https://static.usrfiles.com/ugd/b8c837_82e8055f5a22495692bf1ad55f98445c.pdf
- https://static.usrfiles.com/ugd/daca0d_625c7905b3204cd58791f0d3fc6a23ae.pdf
- https://static.usrfiles.com/ugd/fdd6c2_9048cfadebda447da825e6312b3a8e9b.pdf
- https://static.usrfiles.com/ugd/48d9a1_f33884a8df2c4be5a1147165763f85f8.pdf
- https://cdn.shopify.com/s/files/1/0435/1570/7551/files/duzokumitupelatugapabux.pdf
- https://cdn.shopify.com/s/files/1/0431/9313/9357/files/55943562516.pdf
- https://cdn.shopify.com/s/files/1/0436/0765/4563/files/libros_sobre_auditoria_interna.pdf
- https://static.usrfiles.com/ugd/9cb927_5a011d3ae4ce4c48ad76bc73833730be.pdf
- https://static.usrfiles.com/ugd/54fa57_f568ec610e6242e4901dac48a9cf6495.pdf
- https://static.usrfiles.com/ugd/b8c837_a3912266a6694ec7a4038ccb1f1778ca.pdf
- https://static.usrfiles.com/ugd/930050_215af0b2f2f54201a9271b933bcd3ccd.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_off00007da5.bin0d78334afc0e236defbf7426655e0cf87100f1139f1292ff66ec54994fd163d3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7DA5 | 4924 bytes |
font_01_sfnt_off00008e4d.bin44af48e4879852d815fdc82e30526ce09497857e5014e828b4c0910837c36a97 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8E4D | 15840 bytes |
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