MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a dropper. It contains a large number of external links, many pointing to other PDF files, suggesting a link farm or distribution mechanism. The document body, though partially obfuscated, contains URLs that are likely part of this distribution strategy. The presence of a password archive lure heuristic indicates an attempt to bypass security controls.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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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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ClamAV: Pdf.Dropper.Agent-8854661-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Dropper.Agent-8854661-0
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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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External URI info PDF_URIPDF contains an external URL action
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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 http://bandheadreunions.com/uploads/1/3/0/8/130874529/130874529.html#hoja+de+libreta+para+imprimir
- http://multimodalresearchteam.com/uploads/1/3/0/3/130379227/3060771.pdf
- http://jenniferwasmer.com/uploads/1/3/0/2/130270768/ba87cb03.pdf
- http://sppslibrary.com/uploads/1/3/1/4/131406656/pizatode_rotixofalin.pdf
- http://bandheadreunions.com/uploads/1/3/0/8/130874529/terms.html
- http://bandheadreunions.com/uploads/1/3/0/8/130874529/dmca.html
- http://bandheadreunions.com/uploads/1/3/0/8/130874529/policy.html
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://nulonexix.files.wordpress.com/2020/06/91700969430.pdf
- https://gavadopojame.files.wordpress.com/2020/06/38187194517.pdf
- https://popuxokogoju.files.wordpress.com/2020/06/87151275379.pdf
- https://xulesik.files.wordpress.com/2020/06/ritibubuwitomilure.pdf
- https://lalenej.files.wordpress.com/2020/06/55953494069.pdf
- https://bemurizoz.files.wordpress.com/2020/06/40471271889.pdf
- https://womemeb.files.wordpress.com/2020/06/32899208695.pdf
- https://nuguvatun.files.wordpress.com/2020/06/lakigar.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/
- http://scripts.sil.org/OFL
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005dbd.bina0a2503c1abaf1c5f5fcdeff4acc9c1358ba21153fd4d2b316f73e3d0a2a6aca |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5DBD | 11288 bytes |
font_01_sfnt_off000082e0.bin3f70697d8cfd0b9becff5adcad726f9ffedcc5d773cc6f7abbcc82b2f8034994 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x82E0 | 16164 bytes |
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