MALICIOUS
116
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious File
The PDF contains a large number of external links to various domains, a technique commonly used for SEO link farming or to redirect users to malicious content. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies this pattern. The ML classifier also strongly indicated maliciousness. The document body text is largely unreadable due to encoding issues, but the presence of numerous external URLs is the primary indicator of malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9999
Heuristics 5
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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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Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTHA PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
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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://cityonloc.com/uploads/1/3/0/5/130551423/130551423.html#partes+en+el+contrato+de+arrendamiento PDF link annotation
- http://goldgtechnology.com/uploads/1/3/0/6/130604724/af7fb9c00f5.pdfIn PDF document text
- http://mediapast.net/uploads/1/3/1/1/131163851/443d61.pdfIn PDF document text
- http://cleohogandisabilitygroup.com/uploads/1/3/0/8/130814329/a8ef74e370a8.pdfIn PDF document text
- http://mypainbegonevillage.com/uploads/1/3/0/5/130550980/bogolefogugebivupux.pdfIn PDF document text
- http://affirmationmugs.com/uploads/1/3/0/3/130379175/pelebakevunul.pdfIn PDF document text
- http://communityspanish.com/uploads/1/3/0/6/130621451/8742264.pdfIn PDF document text
- http://lisakennedycollections.com/uploads/1/3/0/9/130969072/taleregiguma.pdfIn PDF document text
- http://smartwaste.site/uploads/1/3/1/1/131163620/2c9c3e4b6.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000627f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x627F | 8688 bytes |
SHA-256: aefc8c24e4721b703e36d096b6090e1910f65811e672a00a3251871e8f8e4f73 |
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