MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. The ML classifier also strongly indicated maliciousness. The document appears to be part of a link farm, attempting to drive traffic to potentially malicious sites disguised as academic resources.
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.cc/pify?keyword=exercice+corrig%25C3%25A9+algorithme+les+tableaux+pdf
- http://files.ronellesart.com/uploads/1/3/1/0/131070407/1ed8d1ac52fa8.pdf
- http://files.nicecurb.org/uploads/1/3/2/6/132680890/7002355.pdf
- http://files.clearhorizon.ca/uploads/1/3/0/7/130775199/4803881.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0431/0673/0144/files/93062999543.pdf
- https://cdn.shopify.com/s/files/1/0429/5809/4495/files/1720167268.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/neretidesalefadim.pdf
- https://cdn.shopify.com/s/files/1/0432/1555/2674/files/cub_cadet_attachments.pdf
- https://cdn.shopify.com/s/files/1/0435/4208/5783/files/98295454195.pdf
- https://cdn.shopify.com/s/files/1/0434/3080/5669/files/taxexagivolapadadulid.pdf
- https://cdn.shopify.com/s/files/1/0438/0576/9888/files/dijijimaxutin.pdf
- https://cdn.shopify.com/s/files/1/0431/7193/8461/files/54627269610.pdf
- https://cdn.shopify.com/s/files/1/0431/9032/1313/files/zediwise.pdf
- https://cdn.shopify.com/s/files/1/0433/2892/9945/files/34734953326.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_off00006efe.bin194a2719e3323081307057a6c6fb4698f07ca06a514674e018e47092a0eae502 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6EFE | 5876 bytes |
font_01_sfnt_off0000828d.bin78a36df40e4b820c2797f32dda1446b2ce19ba3ac95a04a6e7fe157e9195c20b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x828D | 15992 bytes |
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