MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or SEO manipulation tactic. While no scripts were directly extracted, the presence of embedded URLs and the ML classifier's high confidence indicate malicious intent, likely to redirect users to potentially harmful content or phishing sites. The document's content appears to be a calibration certificate template, a common lure.
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://files.johndunsford.co.uk/uploads/1/3/0/6/130620710/130620710.html#pressure+gauge+calibration+certificate+template
- http://yourlifeareas.com/uploads/1/3/2/6/132695575/puxopojen-neziwusuroze-wozoto-rupadevimegi.pdf
- http://homemattersnotebook.com/uploads/1/3/1/4/131406291/6733201.pdf
- http://quiltingcreationsbyamelia.org/uploads/1/3/1/4/131438747/48acb2e6b.pdf
- http://2o.undesirable.us/uploads/1/3/1/6/131607438/5263653.pdf
- http://6q.undesirable.us/uploads/1/3/0/5/130589104/xasinaz.pdf
- http://universalcarpetinstallers.ca/uploads/1/3/0/6/130620268/gavamufiboso_kebojo_mineruvinovev.pdf
- http://hostmaster.ericasteinhagen.com/uploads/1/3/0/2/130289510/25afcbf0b92.pdf
- http://hostmaster.raspadesign.it/uploads/1/3/0/3/130379424/rutebodoz-rogikoza-tamaguwak.pdf
- http://beltavolo.com/uploads/1/3/1/6/131636987/5555079.pdf
- http://acinomunited.com/uploads/1/3/1/3/131380181/jegud_rotevizovap.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://nozikop.files.wordpress.com/2020/06/16713296516.pdf
- https://zedovase.files.wordpress.com/2020/06/69492026696.pdf
- https://wupogoxaxiwu.files.wordpress.com/2020/06/zisewifarofadezipupek.pdf
- https://kipevofi.files.wordpress.com/2020/06/34859902341.pdf
- https://xewefevoba.files.wordpress.com/2020/06/nutul.pdf
- https://rizefoxug.files.wordpress.com/2020/06/89855691354.pdf
- https://zafepog.files.wordpress.com/2020/06/49460010654.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
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000569c.bin85b1d57d4fb0246b79f5fcf028eea0ab0c84e5bdcd90440a82aa1fded4dcf10e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x569C | 5356 bytes |
font_01_sfnt_off000068ae.bin8bd555fc2ab2fdfdba5f8a66a60b98b072a6d37ca75acb82df09f2b6df2def4e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x68AE | 10544 bytes |
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