MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link that redirects to a malicious URL, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the string 'https://ttraff.cc/pify?keyword=biophysics+course+pdf', suggesting a lure for a 'biophysics course pdf'. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, likely for SEO manipulation or to host further malicious content. The ML classifier strongly flagged this PDF as malicious.
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=biophysics+course+pdf
- http://files.theoldiesshowny.com/uploads/1/3/0/7/130739348/414c5.pdf
- http://files.azgpc.org/uploads/1/3/1/6/131637240/f69b4c6929.pdf
- http://files.junctioncraft.com/uploads/1/3/1/8/131871687/norasifutisiwaridipa.pdf
- http://files.goodgirlsgonegrimm.com/uploads/1/3/0/7/130776749/9022892.pdf
- https://cdn.shopify.com/s/files/1/0430/6301/7629/files/57585686909.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/miveguxuxububepevomozit.pdf
- https://cdn.shopify.com/s/files/1/0429/7677/2250/files/lazivakamexupudogoje.pdf
- https://cdn.shopify.com/s/files/1/0429/6825/2565/files/xumitiwamoxiribusowoke.pdf
- https://cdn.shopify.com/s/files/1/0428/8797/0975/files/tovinibavesizodoves.pdf
- https://cdn.shopify.com/s/files/1/0431/7016/8986/files/mefasirigi.pdf
- https://cdn.shopify.com/s/files/1/0430/0229/8521/files/ziwoxepigofazapaguj.pdf
- https://cdn.shopify.com/s/files/1/0429/9295/9642/files/39118528471.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23929268289.pdf
- https://cdn.shopify.com/s/files/1/0428/5402/3327/files/gedavorunakituvurejigulej.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nimapudusakodinufuzexive.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_off0000a213.binf789a03aa0f58c2a01c2a2156be22d9943dd1e70bb747a33ae1a03465fcb9183 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA213 | 5152 bytes |
font_01_sfnt_off0000b3a2.bin72c24f330ae515621425fb0436308b1418cc96536779578ee197ed1ad1b7a662 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB3A2 | 11208 bytes |
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