MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains numerous embedded links, including a critical redirector link to 'ttraff.cc' and a large number of links to external PDF files hosted on various domains, indicative of a link farm. The document body text and embedded links suggest a lure for free educational material, likely to redirect users to malicious sites. No scripts were extracted, but the PDF structure and embedded links strongly suggest a social engineering attack.
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/wb?keyword=hadoop%20with%20python%20free%20pdf
- http://files.mairibudreau.com/uploads/1/3/0/7/130776864/ziwawajobigogefivane.pdf
- http://files.dianashepherd.co.uk/uploads/1/3/0/7/130739780/rajisuro_paliva.pdf
- http://files.noellejkim.com/uploads/1/3/1/4/131437753/aab93.pdf
- http://files.oldtel.com/uploads/1/3/1/4/131453316/3239411.pdf
- http://files.match-gems.com/uploads/1/3/0/9/130969243/waruxe-gibotusupuwe-viputefetapaj-walugogigebomev.pdf
- http://files.norcalteachertrainers.com/uploads/1/3/1/3/131384539/deruvebijimuka-pogelajatozebe.pdf
- http://files.fustlerthefemalehustler.com/uploads/1/3/0/7/130739839/gaxiwoloxakutenuboj.pdf
- http://files.yogawithjw.com/uploads/1/3/1/4/131454634/8500066.pdf
- https://netanopitoli.files.wordpress.com/2020/06/gozakinoxujavuguvaxeda.pdf
- https://tigifelaziv.files.wordpress.com/2020/06/miragijusukamimunamo.pdf
- https://sutuvemisa.files.wordpress.com/2020/06/91805939894.pdf
- https://wiralobabovi.files.wordpress.com/2020/06/32772157617.pdf
- https://gipegamufeka.files.wordpress.com/2020/06/38028128932.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_off00004e2c.binb90a52319a33a41fd40f79a36e8f1c9c036cf7e52023b0339775ac3d96e7bfc1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4E2C | 4864 bytes |
font_01_sfnt_off00005ebc.bin80b9b0d77fb3a9d1c34d6cedec4d08df7fcdb036faed059a79ecee30c29c0425 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5EBC | 9928 bytes |
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