MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
T1566.002 Spearphishing Attachment
The PDF contains embedded links that redirect to a malicious URL, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though heavily obfuscated, contains a reference to the same URL and keywords suggesting an attempt to disguise malicious content as educational material. The ML classifier also strongly indicated maliciousness.
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=algebraic+expressions+class+7+worksheets+with+answers+pdf
- http://files.turnerintottenham.uk/uploads/1/3/1/3/131398244/3993996.pdf
- http://files.48kgs.co.uk/uploads/1/3/1/8/131871614/golenaj.pdf
- http://wosug.mercedesclubindia.com/uploads/1/3/2/6/132681513/7295df836481.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gomejalubewetilukifij.pdf
- https://cdn.shopify.com/s/files/1/0428/1332/5471/files/puvobufiruzepo.pdf
- https://cdn.shopify.com/s/files/1/0431/5168/7848/files/peketuwawiradawe.pdf
- https://cdn.shopify.com/s/files/1/0435/6079/6318/files/college_panda_sat_grammar.pdf
- https://cdn.shopify.com/s/files/1/0430/5456/3477/files/47261852925.pdf
- https://cdn.shopify.com/s/files/1/0428/9747/3699/files/51137237712.pdf
- https://cdn.shopify.com/s/files/1/0430/8385/8073/files/73951517680.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/92835403356.pdf
- https://cdn.shopify.com/s/files/1/0432/5317/0334/files/scantron_answer_sheet.pdf
- https://cdn.shopify.com/s/files/1/0433/7824/5781/files/22305679039.pdf
- https://cdn.shopify.com/s/files/1/0440/1420/7134/files/32777373422.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_off000096ed.bin10518e942974eba18e75c878f147da5616d1a2bc145ab28ffdacf3b7d4f26719 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x96ED | 5848 bytes |
font_01_sfnt_off0000aae7.bindf0551c53d0dc8a526cdc1b7cea2647c75493e8d0396386257bb3d76dc27de89 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAAE7 | 14820 bytes |
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