MALICIOUS
96
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, many of which point to PDF files hosted on compromised CMS upload directories. This suggests the document is designed to act as a link farm, potentially for SEO poisoning or to distribute malicious payloads. The ML classifier also strongly indicated maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 0.9840
Heuristics 5
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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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 https://impulsa.mantareys.net/uploads/plantillas/files/15750850085.pdf
- http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/16131495f41faf---29976992709.pdf
- https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/d33cd9b6a4b533b85efbe2fcd29cd475/sugujujupid.pdf
- https://gadd-asso.org/userfiles/file/10425449083.pdf
- http://cuacuonnhaxuongbinhduong.com/upload/files/37481333620.pdf
- http://baove24h.info/upload/files/xebutu.pdf
- https://terracell.pt/images/file/48100784419.pdf
- https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/ca28965b145a9f853440dc2c619c84da/rovuzutiwezojukalomukal.pdf
- http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132faef7a18b---kozigakanazelupiv.pdf
- https://ctcitsupport.com/media/files/63057555071.pdf
- https://insp.biz/img/file/xogafikiwusepomomororitu.pdf
- https://www.popcaffe.it/wp-content/plugins/super-forms/uploads/php/files/b027f28ed2aaa08fa4006cf4d4f1581c/todij.pdf
- http://izumrud38.com/ckfinder/userfiles/files/zedalopojofu.pdf
- https://samavetpharm.com/userfiles/files/74406538092.pdf
- http://cistenivytahu.cz/upload/file/7552637480.pdf
- https://winstar-tools.com/UserFiles/editor/file/fopupeguvitasogi.pdf
- http://handinks.com/ckfinder/images_store/files/26809671109.pdf
- http://pspectr.ru/userfiles/file/85379986014.pdf
- https://drddvichitra.com/userfiles/file/nudugila.pdf
- http://zulaikhatextile.com/userfiles/files/56360137745.pdf
- http://cmtdental.com/upload/ckimg/files/34328034594.pdf
- http://ms-beauty.com/ckfinder/userfiles/files/zaxiwovapetasutofazo.pdf
- https://rajaketiga.com/contents/files/97166771601.pdf
- https://akrmedia.no/ckfinder/userfiles/files/jizudexuxabumuv.pdf
- http://yaqeen-eg.com/userfiles/file/kuxoviwubupodowexumugepig.pdf
- https://hw-power.com/uploads/ckfiles/files/613a3e15e1798.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=test+of+divisibility+of+8
- 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://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000c236.bin85fc2e6abe769d1b05866c8b2ca0b9d92fea64f3021cee7c48383613a1d670d7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC236 | 19136 bytes |
font_01_sfnt_off0000f414.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF414 | 16792 bytes |
font_02_sfnt_off00010c2b.bind281b9ae298652b4d6f8f91bd4f202466132e516e484b95ec8f773289b207cee |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C2B | 10472 bytes |
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