MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous embedded links, with a critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text suggesting it is a 'student book pdf' and includes the malicious URL. The ML classifier strongly indicates maliciousness, supporting the attack pattern of luring users to malicious sites.
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/pify?keyword=bebop+1+student%2527+s+book+pdf
- http://fanubenil.commitment-health.com/uploads/1/3/2/6/132695569/2956107.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0454/1834/8712/files/ghas_mandi_ki_report.pdf
- https://cdn.shopify.com/s/files/1/0436/8669/0969/files/answers_to_crossword_puzzles_with_friends.pdf
- https://cdn.shopify.com/s/files/1/0433/9499/0243/files/21510805500.pdf
- https://cdn.shopify.com/s/files/1/0428/5467/8687/files/44353752733.pdf
- https://cdn.shopify.com/s/files/1/0433/6936/5654/files/seluluvazizuje.pdf
- https://cdn.shopify.com/s/files/1/0435/1547/8176/files/suluzexuzab.pdf
- https://cdn.shopify.com/s/files/1/0428/5893/8531/files/auxiliar_administrativo_del_estado_temario_gratis.pdf
- https://cdn.shopify.com/s/files/1/0429/2768/5788/files/mazurowikik.pdf
- https://cdn.shopify.com/s/files/1/0427/5542/4423/files/90869255206.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/25668779603.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_off000044bb.bin1d28f11103de1c7c519f76554c7a1f65a8595ee8aabebe31ce65007a32c97beb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x44BB | 5036 bytes |
font_01_sfnt_off000055fb.bin24548ae1486a39b2a8883383f38b2b7585db58328676e9f4e2a8e259edf3f1ce |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x55FB | 9660 bytes |
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