MALICIOUS
94
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of external links to other PDF files hosted on various domains, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier also strongly flagged this PDF as malicious. The embedded document body text, though partially corrupted, contains a title related to chemistry and mentions 'wkhtmltopdf', suggesting it might be a lure document. The primary attack pattern appears to be directing users to a network of linked PDF files, potentially for SEO spam or to host further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
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://riversidecountyhistory.org/uploads/1/3/0/7/130775997/130775997.html#compuestos+que+tengan+enlace+covalente+polar
- http://monicaariasmiranda.com/uploads/1/3/0/6/130640146/5558eb152a32ecd.pdf
- http://glichtental.net/uploads/1/3/0/2/130270901/veremumezofe_lubojizudezifo_vumaridivex.pdf
- http://careerwarriornetwork.com/uploads/1/3/0/5/130551971/vutivotaxixiz.pdf
- http://healingkcs.com/uploads/1/3/0/6/130621310/jarapugumu-bemumil-fupakelage.pdf
- http://thel14.com/uploads/1/3/0/7/130739026/vozuwadodamuwi.pdf
- http://ballispoint.com/uploads/1/3/0/6/130620795/b97876c.pdf
- http://bellakreationsgifts.com/uploads/1/3/0/6/130639563/7982165.pdf
- http://resource-economics.org/uploads/1/3/0/8/130814254/55029490.pdf
- http://www.kylielyall.com/uploads/1/3/0/2/130289310/6992160.pdf
- http://nxlevelgolf.com/uploads/1/3/0/6/130604294/6627242.pdf
- http://ericadarchelle.services/uploads/1/3/0/8/130873893/muzeravataba.pdf
- http://www.autotransportesamy.com/uploads/1/3/0/6/130622005/fuboped-kemasukuruzi-mebidupati.pdf
- http://onewebday.net/uploads/1/3/0/5/130541346/766b67c4b2d0.pdf
- http://moderntutoringandeducationservices.com/uploads/1/3/0/5/130551140/ruzotowizifi.pdf
- http://bevingroup.com/uploads/1/3/0/6/130605078/1412cfee232.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_off00007c91.binc30c3a05f5e43da36cdc4b348f9f40e9ecb144012d0df03cb726cad1ed8ab4b2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7C91 | 9352 bytes |
font_01_sfnt_off00009ea0.bina12b50bc3078adab06879d8d162ace6ac63ff3bcc460f3fb7fd18d41692fb60c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9EA0 | 3048 bytes |
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