MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 User Execution: Malicious File
The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. The primary lure appears to be a search result for 'base64 pdf decoder online', directing users to a malicious redirector. The ML classifier strongly indicated maliciousness, and the PDF structure itself is suspicious due to duplicate object bodies.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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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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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 https://ttraff.com/wb?keyword=base64%20pdf%20decoder%20online
- http://files.authorkimfox.com/uploads/1/3/1/3/131379612/kemunafejebos_furugamoros_vagububike_wivosoruda.pdf
- http://files.thetlacademy.shop/uploads/1/3/1/3/131384789/dupive-madelubupazape-dezarekinoza.pdf
- http://files.philprobstcyclist.com/uploads/1/3/0/9/130969404/nudaxox.pdf
- http://files.cosmicbrushes.co.uk/uploads/1/3/0/7/130738806/4660277.pdf
- http://files.futurestarsathletics.com/uploads/1/3/0/7/130775368/d2bacbeaf.pdf
- http://files.canmorecounselling.com/uploads/1/3/1/4/131483154/netipamuropixive.pdf
- http://files.monumentvillageoriginal.org/uploads/1/3/2/6/132681951/7039a.pdf
- https://guzolegevaxa.files.wordpress.com/2020/07/nebuduvobumol.pdf
- https://mirusafib.files.wordpress.com/2020/06/muguzevogivuzijufumafe.pdf
- https://rizujofug.files.wordpress.com/2020/06/nafodalupotu.pdf
- https://vomujonij.files.wordpress.com/2020/07/zajalare.pdf
- https://sudumol.files.wordpress.com/2020/07/37205639363.pdf
- https://gopamewub.files.wordpress.com/2020/07/wuwaxolibilofesim.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dusegu.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rasebiv.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13977314479.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/90442425312.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jokopewizemaw.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_off0000632a.bin5522a87263835f5c0cd7bec9070331173c6a222baf29f610db16a0509bd971b7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x632A | 5148 bytes |
font_01_sfnt_off000074a8.binc02006fb1bdc3034fd233c54a40ed85d35ca1fe489614fb02de58c26fc1e66c7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x74A8 | 10400 bytes |
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