MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains numerous embedded links, with one prominent URL pointing to a known malicious redirector. The document body, though partially corrupted, includes text related to a free download lure for "Adobe indesign cc classroom in a book", suggesting a social engineering tactic to entice users to click the malicious link. 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=adobe+indesign+cc+classroom+in+a+book+free+download
- https://static.usrfiles.com/ugd/3b0c81_60291ef39cc74b32bd77821370acd12b.pdf
- https://static.usrfiles.com/ugd/b7ed05_fc74d4ba7a4945ba88d3bfb7fe4e85b0.pdf
- https://static.usrfiles.com/ugd/b8c837_9d5d4559799d4e79b77e9104af2e55d2.pdf
- https://cdn.shopify.com/s/files/1/0449/2935/1835/files/baixar_livros_gratis_em_portugues.pdf
- https://cdn.shopify.com/s/files/1/0430/8946/1410/files/51215737659.pdf
- https://cdn.shopify.com/s/files/1/0435/9972/4702/files/el_sintoismo.pdf
- https://cdn.shopify.com/s/files/1/0428/2574/4547/files/43944335482.pdf
- https://static.usrfiles.com/ugd/c7a620_e459a149701e434fb1c1f22ba0895ee8.pdf
- https://static.usrfiles.com/ugd/b8c837_6183246d100d46d28dc6b95d7a1db236.pdf
- https://cdn.shopify.com/s/files/1/0440/0896/4246/files/chamberlain_group_email_address_format.pdf
- https://cdn.shopify.com/s/files/1/0432/4130/8320/files/truportal_access_control.pdf
- https://cdn.shopify.com/s/files/1/0432/7371/5880/files/equilibrio_acido_base_sistema_respiratorio.pdf
- https://cdn.shopify.com/s/files/1/0434/3706/4344/files/dojonijabenitisuzis.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_off00006345.bin5ac78addf3a6587d7f7af5d4c0a67f7126ceeeacdcd13d1260a20d1c68cf3b10 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6345 | 5628 bytes |
font_01_sfnt_off0000765d.binb604a420997359220bfa7f00dcc2fb6ae53d3413d8295f9cf9bb7f1aba2cda19 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x765D | 10288 bytes |
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