MALICIOUS
94
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment
T1204.002 Malicious File: Malicious File
The PDF file contains a large number of external links, many of which point to other PDF files, indicating a link farm designed to artificially boost search engine rankings. The document body, though partially corrupted, suggests a lure for a 'digital control systems textbook free download'. The ML classifier strongly flagged this PDF as malicious, and the heuristic firings confirm the presence of a mass external PDF link farm.
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://carpetcleancary.com/uploads/1/3/0/5/130544091/130544091.html#digital+control+systems+textbook+free+download
- http://dlgunsmithing.net/uploads/1/3/0/4/130435598/janijase.pdf
- http://atelierquimera.com/uploads/1/3/0/6/130639491/satubupuv-mevojen-juvazivu.pdf
- http://canmoreappliancerepair.com/uploads/1/3/0/7/130775635/11e0000a5a43b9.pdf
- http://steveanddannythompson.com/uploads/1/3/0/2/130289377/e60f19bf.pdf
- http://austinmaloney.net/uploads/1/3/0/5/130589331/3592588.pdf
- http://entaoproductions.com/uploads/1/3/0/6/130621225/7160894.pdf
- http://myfavfork.com/uploads/1/3/1/0/131070925/495facc1.pdf
- http://hedyting.ca/uploads/1/3/0/7/130776823/kifenix-nukalizoku.pdf
- http://cityfarmindustries.com/uploads/1/3/0/7/130775622/3357244.pdf
- http://clvr-cv.com/uploads/1/3/0/3/130323453/49ec85f125aca6.pdf
- http://sprexperientiallearning.com/uploads/1/3/0/4/130476255/8042676.pdf
- http://surgeryprocess.com/uploads/1/3/0/3/130379741/619b405fc64fc8e.pdf
- http://janefaily.com/uploads/1/3/0/5/130540104/bikumikufo.pdf
- http://holyboidesigns.com/uploads/1/3/0/3/130313383/jilox.pdf
- http://walkingmountain.net/uploads/1/3/0/9/130969974/40def0bdca02fa.pdf
- http://kellettcommunications.com/uploads/1/3/0/6/130639224/1526547.pdf
- http://kkandooenglish.com/uploads/1/3/0/8/130813496/renipatitupidom-jovirogexisabi-tusesodomofavu.pdf
- http://teknikdagen.se/uploads/1/3/0/7/130775742/9106161.pdf
- http://zteaches.com/uploads/1/3/0/6/130640031/a1b2364d.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 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00007281.bin71a1c8df42b0e58cb02f7a8c8f9c96641bf2990fdf925fbbd8263f860efe20f7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7281 | 8488 bytes |
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