MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains embedded links that point to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier strongly supports maliciousness. The document body, though heavily obfuscated, contains a URL that is also present in the heuristics, reinforcing the malicious intent. The primary attack vector appears to be a lure document designed to redirect users 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.ru/pify?keyword=burrhus+frederic+skinner+pdf
- http://files.sakinaliterarysociety.com/uploads/1/3/1/6/131606373/xoxuwujefixofan.pdf
- http://files.lrvedo.com/uploads/1/3/1/4/131452903/xevot.pdf
- http://files.picardvaservices.com/uploads/1/3/0/8/130814245/6517023.pdf
- http://files.laepartners.net/uploads/1/3/1/4/131438245/6797d3ca4.pdf
- https://cdn.shopify.com/s/files/1/0435/4945/8591/files/40756986457.pdf
- https://cdn.shopify.com/s/files/1/0429/0327/3628/files/67509303670.pdf
- https://cdn.shopify.com/s/files/1/0437/0936/6427/files/soils_in_construction_5th_edition.pdf
- https://cdn.shopify.com/s/files/1/0430/8942/8637/files/manufacturing_business_plan_example.pdf
- https://cdn.shopify.com/s/files/1/0433/5026/1915/files/wefakekamiv.pdf
- https://cdn.shopify.com/s/files/1/0429/7113/6154/files/zalasogofuxa.pdf
- https://cdn.shopify.com/s/files/1/0427/4647/8758/files/tabusigukunebodinoderu.pdf
- https://cdn.shopify.com/s/files/1/0434/8664/2336/files/51097236366.pdf
- https://cdn.shopify.com/s/files/1/0428/1391/5303/files/73800083828.pdf
- https://cdn.shopify.com/s/files/1/0435/9979/0243/files/popanixevupotijuvifufaz.pdf
- https://cdn.shopify.com/s/files/1/0434/2412/0984/files/17029372495.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_off0001079e.bin203cd1c1ef6a7745b229710c5d05860f96d627c97c8c173ff8f01d424113f7e7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1079E | 5116 bytes |
font_01_sfnt_off00011905.bindcd9a78eff3ecc9bccebee3cff85a61c6e11f4e3757e5de195684cb3b7012387 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11905 | 10308 bytes |
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