MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF document was identified as malicious due to a heuristic detecting a large number of external links, characteristic of a link farm or phishing lure. The document body contains garbled text and references to 'wkhtmltopdf', suggesting it was programmatically generated. The primary attack pattern involves directing users to a multitude of external URLs, such as http://montanapurewood.com/uploads/1/3/0/9/130969963/130969963.html#organisms+in+the+phylum+annelida+are+protostome+or+deuterostome, which likely host malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 4
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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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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://montanapurewood.com/uploads/1/3/0/9/130969963/130969963.html#organisms+in+the+phylum+annelida+are+protostome+or+deuterostome PDF link annotation
- http://paradoxbarbers.com/uploads/1/3/0/8/130813876/fesofaziduza.pdfIn PDF document text
- http://viamediapromos.com/uploads/1/3/0/7/130740183/bujinukebumi.pdfIn PDF document text
- http://worldmarblegranite.com/uploads/1/3/1/6/131607278/rigaxudumo.pdfIn PDF document text
- http://skspackaging.net/uploads/1/3/0/5/130551065/febomikavetumub-xuveme.pdfIn PDF document text
- http://viamediapromos.com/uploads/1/3/1/4/131437604/7971145.pdfIn PDF document text
- http://through-the-eyes-of-another.com/uploads/1/3/0/4/130476669/wovewivepitalonapon.pdfIn PDF document text
- http://petitesilesdefrance.fr/uploads/1/3/1/4/131407253/vivalemajofuxopowube.pdfIn PDF document text
- http://gem-empire.com/uploads/1/3/0/5/130551880/2644165.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000063ac.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x63AC | 8056 bytes |
SHA-256: 369523d1495db3648c45e827f7cc6039275ca47ab18da769ad30d5034e199793 |
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font_01_sfnt_off000082f4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x82F4 | 16224 bytes |
SHA-256: da097a8c459adbfdf1b1d97412e41569b305acf822c6e113ff3e46e38a168572 |
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