MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file contains a link farm pointing to multiple compromised WordPress sites, indicating a likely attempt to distribute malicious content or phish users. The ML classifier strongly flagged this PDF as malicious. While no scripts were extracted, the structure and URL patterns suggest a malicious intent to redirect users through a series of potentially compromised domains.
Machine Learning
- Nyx PDF Classifier malicious score 0.9736
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 http://cappellastudio.it/userfiles/files/97719617791.pdf
- https://porterbrothersltd.com/app/webroot/uploads/84198009636.pdf
- http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bcd449ad8b4---34849626146.pdf
- https://przyklejki.pl/userfiles/guzovabow.pdf
- http://riggi.ru/userfiles/file/58926353173.pdf
- https://sf-tfi-pgu.uz/wp-content/plugins/super-forms/uploads/php/files/e24d174a60c6625df1f007e749ce7651/44301036145.pdf
- http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/oj3b3tki2f9g8lgd7tofa80204/zobijepatanekinerazekov.pdf
- http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160d2320d5fa09---luditiwekivatode.pdf
- http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a7b36965125---26067388159.pdf
- https://matrainagycsalados.hu/userfiles/file/22147166842.pdf
- https://olivier-daulte.com/ckfinder/userfiles/files/kefasabix.pdf
- http://yuha.be/_files/file/84993579547.pdf
- https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/a833cm55k08747auhalp6ger63/70702849589.pdf
- https://gbeequestriansurfaces.com/wp-content/plugins/super-forms/uploads/php/files/pbeni76lgta7fcb35mi41l5nuu/biremajabifan.pdf
- https://expresstestingatl.com/wp-content/plugins/super-forms/uploads/php/files/e732e11e990aa2388cdefe96ad6ffec9/rukarekoxudaviretijeb.pdf
- https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/1609e16432f1ba---vutade.pdf
- https://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16073c257bf317---3738681561.pdf
- http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c05ebadd02a---vodifop.pdf
- http://norilskgu.ru/userfiles/file/56615773012.pdf
- http://www.korayozelguvenlik.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083a8a89b770---67504766190.pdf
- https://movesforfree.com/wp-content/plugins/super-forms/uploads/php/files/qo7bnigvsun15mabrmigrucsq7/57066982379.pdf
- https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/d5ef25a75595699d9e53e9800879d7e9/21008417013.pdf
- https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/a00f507106846395019e4022084c58f9/97025008133.pdf
- https://golf-tout-terrain.com/publish/page/file/32441215114.pdf
- https://asthasupermarket.com/userfiles/file/77567600953.pdf
- https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ba3fb9c781---xulejowusuguv.pdf
- http://bigband-ulm.de/userfiles/files/95885133400.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=second+language+acquisition+meaning
- 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_off00020043.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x20043 | 16792 bytes |
font_01_sfnt_off0002185a.bine0bb259a6d08d4eb27b081f7126597bbfb6fcf9c6b919aaa81bd7f4af00239b4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x2185A | 10932 bytes |
font_02_sfnt_off00023122.bin4f47f2ce0ee7fca6be58d9ec732ceb32f81d12b4889df5c71e097957a28218cb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x23122 | 18756 bytes |
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