MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains embedded links, one of which points to a known malicious redirector. The document body, though heavily obfuscated, also contains the URL for the redirector and several other URLs that appear to be part of a link farm. The ML classifier strongly indicated maliciousness. No scripts were extracted, but the presence of the malicious redirector suggests a phishing or malware delivery attempt.
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=libro+biopsicologia+john+pinel+pdf
- http://files.olathesouththeatre.org/uploads/1/3/1/0/131070872/ludev.pdf
- http://files.k7-13.org/uploads/1/3/1/6/131607075/5fdb1e870.pdf
- http://tunugeko.naianinternational.com/uploads/1/3/0/7/130776644/449930.pdf
- http://files.northcoastknitting.org/uploads/1/3/1/3/131379296/wuwelijivipepij.pdf
- https://cdn.shopify.com/s/files/1/0441/2263/6440/files/jquery_ajax_manual.pdf
- https://cdn.shopify.com/s/files/1/0429/5658/7174/files/1232583575.pdf
- https://cdn.shopify.com/s/files/1/0434/5099/0753/files/demand_driven_material_requirements_planning.pdf
- https://cdn.shopify.com/s/files/1/0428/2312/3100/files/95541939045.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/949986333.pdf
- https://cdn.shopify.com/s/files/1/0432/2469/4939/files/gafiru.pdf
- https://cdn.shopify.com/s/files/1/0430/6305/0394/files/april_current_affairs_2020_ssc_adda.pdf
- https://cdn.shopify.com/s/files/1/0430/0688/6051/files/93223294338.pdf
- https://cdn.shopify.com/s/files/1/0430/7818/9205/files/22201640399.pdf
- https://cdn.shopify.com/s/files/1/0432/6883/3436/files/blueprint_book_nicholas_christakis.pdf
- https://cdn.shopify.com/s/files/1/0437/5920/6561/files/wodut.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_off000065e9.bin7447981e5e009a51ca0df93c5de27812672cb7b638a73239e07e4a395df124bc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x65E9 | 5576 bytes |
font_01_sfnt_off000078dc.bind436440285a15353088a8115150cae4906cdaa5f55a9170693c5cac032288292 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x78DC | 10156 bytes |
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