MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF document contains a link farm that directs users to multiple URLs hosted on compromised WordPress sites. These sites appear to be serving further PDF files, suggesting a chain of redirection or a distribution mechanism for malicious content. The ML classifier strongly indicated maliciousness, supporting the assessment of a link farm attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9835
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://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/b8d7f6d0440f35edb6d6513145049914/49954297904.pdf
- http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/16075aa7c0ef4b---37875251034.pdf
- https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/f073fd9a2bc2bce3d3f4613359974153/57191951003.pdf
- http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/a02d951c0b906f03750788e7a5d8528a/37280118483.pdf
- https://humble-brag.com/wp-content/plugins/super-forms/uploads/php/files/302nv5lp2j7i62kl23st3al52q/9158673345.pdf
- https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/s6i18jelbi94t3pmo3g18rgqsp/nekugun.pdf
- http://broomfield82.com/clients/4/48/489ff1710263d1ca947d92387d56c809/File/71928384053.pdf
- https://law.myvzl.com/wp-content/plugins/super-forms/uploads/php/files/k7tfhk58lgqkldq3dk0rboag5k/najip.pdf
- https://arizonalightingsales.com/wp-content/plugins/super-forms/uploads/php/files/753fff6e1847fb5d36fee083475dac15/58672364122.pdf
- https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//73222000413.pdf
- https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd641ae1f70---76729642310.pdf
- https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/2ee2474604930208dfc09149da02eca7/sozewugigopunod.pdf
- http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/c78b24801c5388de311b145d25769ef2/bimolizonufasotole.pdf
- http://urbanconstructions.org/images/uploadedimages/file/raduxu.pdf
- http://stomerijindex.nl/images/uploads/89339837248.pdf
- http://kruengrangthai.com/files/files/14152108004.pdf
- https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/7e75preargud4qh6i050gr32sk/mexejamasa.pdf
- http://historia-bfured.hu/userfiles/file/65581369011.pdf
- http://mnogonomerov.ru/uploads/file/lasapiwenakol.pdf
- https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/352b9dc040de3dfd6c9034e2f345b8f1/63286560335.pdf
- https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/771996a2f8e7d99bb02c9cdbcff32db6/mololajajepowaven.pdf
- http://nutranghongngoc.com/media/ftp/file/tujuji.pdf
- https://criteriacambio.com.br/wp-content/plugins/super-forms/uploads/php/files/57snqjkkev13jciv1n1r0531up/wazedo.pdf
- https://bayardplaza.co.uk/wp-content/plugins/super-forms/uploads/php/files/imhu0le8h10jlvslii39g6g6u2/27165669010.pdf
- https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/2902ad9914fa423868b555a9c1234eb0/88912557361.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=how+to+go+goth
- http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e891f799d01---74347843746.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://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_off0000f906.bin0630ecc61b17c2aeb614483717c53b0380956f4b9d4f8c86a7857ee5f0cc5dcd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF906 | 9660 bytes |
font_01_sfnt_off00010e21.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E21 | 16792 bytes |
font_02_sfnt_off00012633.binfea6ddb200518162e6149e60cbf20e6669a300ef7e83c993abcb4bfcbc1a34e6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12633 | 17284 bytes |
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