MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a prominent link that redirects to a malicious URL, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially corrupted, contains text related to downloading chess openings in PDF format, suggesting a lure. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious classification. The primary IOC is the redirector URL, which is designed to lead users to further malicious content.
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.com/pify?keyword=descargar+aperturas+de+ajedrez+gratis+en+pdf
- http://nexapodov.wvrra.org/uploads/1/3/0/7/130776031/tulidobinosibimaka.pdf
- http://danerezox.kdchanelbeauty.com/uploads/1/3/1/0/131070786/lijego.pdf
- http://files.anchorsaweighfarm.com/uploads/1/3/1/3/131381772/2299552.pdf
- http://files.sandaharrboerboels.com/uploads/1/3/2/6/132681566/6896535.pdf
- http://files.timperleygardencentre.com/uploads/1/3/0/7/130739308/6309311.pdf
- https://cdn.shopify.com/s/files/1/0431/2068/9306/files/pirukifatajijemav.pdf
- https://cdn.shopify.com/s/files/1/0435/0859/6900/files/98369799797.pdf
- https://cdn.shopify.com/s/files/1/0432/5238/3904/files/lidelofakodutelira.pdf
- https://cdn.shopify.com/s/files/1/0429/4891/9450/files/42802115973.pdf
- https://cdn.shopify.com/s/files/1/0431/1757/6354/files/les_capitales_des_pays_du_monde.pdf
- https://cdn.shopify.com/s/files/1/0431/7921/2959/files/60359889104.pdf
- https://cdn.shopify.com/s/files/1/0436/8993/5002/files/maikling_balagtasan_script.pdf
- https://cdn.shopify.com/s/files/1/0435/1796/8536/files/absceso_dentoalveolar_agudo.pdf
- https://cdn.shopify.com/s/files/1/0431/7098/8188/files/xiregixomoxe.pdf
- https://cdn.shopify.com/s/files/1/0437/9095/8749/files/xelokuxuwulegotakobiwu.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_off000073ae.bin0bfa9bee3a749c4f80811eff0dc66896f8805832733582729e7c9749548d3277 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x73AE | 5416 bytes |
font_01_sfnt_off0000863f.bin074f11d78a0ab29ec564efe3a97a45adc1841a3410870f3bea47fbc25f57ff08 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x863F | 11336 bytes |
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