MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector link. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains text that appears to be a lure for a PDF related to accordion buttons, and includes the malicious redirector URL. The primary attack pattern involves redirecting the user to malicious infrastructure.
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=libro+de+acordeon+de+botones+pdf
- http://bisedugud.anewleaf4you.com/uploads/1/3/2/6/132681947/jusipirerivisilip.pdf
- http://files.stclairslsc.org/uploads/1/3/0/8/130874524/zazaxekasovirugukew.pdf
- http://files.cepac.org.uk/uploads/1/3/1/4/131411281/5610327.pdf
- https://cdn.shopify.com/s/files/1/0436/8960/7321/files/fixisuf.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/2860038855.pdf
- https://cdn.shopify.com/s/files/1/0437/6743/1320/files/vipejeretos.pdf
- https://cdn.shopify.com/s/files/1/0431/6971/0242/files/raburilefarebojitunin.pdf
- https://cdn.shopify.com/s/files/1/0433/6805/4949/files/speedtest_server_list.pdf
- https://cdn.shopify.com/s/files/1/0430/7940/1634/files/riwilatok.pdf
- https://cdn.shopify.com/s/files/1/0440/3717/7494/files/academy_awards_2020.pdf
- https://cdn.shopify.com/s/files/1/0440/0034/6270/files/57699182717.pdf
- https://cdn.shopify.com/s/files/1/0437/9482/5376/files/28394728945.pdf
- https://cdn.shopify.com/s/files/1/0435/4139/7656/files/sesow.pdf
- https://cdn.shopify.com/s/files/1/0431/5679/9647/files/calculus_briggs_cochran_solutions_manual_download.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00009dd5.bindd7b880f1c6958317b71933e3175eb4154b1281d355b69180e4ce829e506ee21 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9DD5 | 2828 bytes |
font_01_sfnt_off0000a7cf.bin7ad5528de86e089d4cfe70c85500603ff61057d4ca580e925ba82f190ed5f903 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA7CF | 5200 bytes |
font_02_sfnt_off0000b984.binef7c32c8d2a1a0c630c810ccab330530c6e3c5354ff7cdca926ff7524f054ca6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB984 | 11424 bytes |
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