MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The ML classifier also strongly indicated maliciousness. The embedded URL points to a known malicious redirector, and the document body, though heavily obfuscated, contains this URL. The primary attack pattern appears to be SEO manipulation or redirection to 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.ru/pify?keyword=essentials+of+neuropsychiatry+and+behavioral+neurosciences+pdf
- http://files.phil-amsocietycolorado.org/uploads/1/3/1/1/131164358/f5634dd0afd.pdf
- http://files.hallsoflondon.com/uploads/1/3/0/7/130738755/1485280.pdf
- http://files.drewbcarr.com/uploads/1/3/1/1/131164236/3040481.pdf
- http://files.elishiareynolds.com/uploads/1/3/1/4/131407823/4659880.pdf
- http://files.mysugarspun.com/uploads/1/3/1/8/131872032/rowures.pdf
- https://cdn.shopify.com/s/files/1/0435/6525/2771/files/1-_99_thieving_guide_osrs.pdf
- https://cdn.shopify.com/s/files/1/0436/0211/6772/files/7220629352.pdf
- https://cdn.shopify.com/s/files/1/0435/6780/8667/files/zovazimopuja.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34456372212.pdf
- https://cdn.shopify.com/s/files/1/0432/0349/4043/files/lizaburubilefojabi.pdf
- https://cdn.shopify.com/s/files/1/0429/6422/2101/files/balozolusijaxuko.pdf
- https://cdn.shopify.com/s/files/1/0433/4754/2175/files/60502206681.pdf
- https://cdn.shopify.com/s/files/1/0431/4487/2085/files/32760647642.pdf
- https://cdn.shopify.com/s/files/1/0429/9912/0033/files/zomuzuxadurom.pdf
- https://cdn.shopify.com/s/files/1/0433/1392/2206/files/43494096492.pdf
- https://cdn.shopify.com/s/files/1/0429/8801/1673/files/mavafegevikezetipukeg.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_off0000b157.bina3efa29f9570670cd9f07d2bc7695353ecfc2305145cadec2132227d56c507b1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB157 | 5504 bytes |
font_01_sfnt_off0000c410.bin40ae74ef5c9e676f9dd97deb2fb84617a028bfb819d565d210624e47fa62f9d1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC410 | 10156 bytes |
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