MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous external URIs pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to redirect users to malicious sites. The presence of multiple PDF_SEO_DISPOSABLE_LINK_FARM heuristics further supports this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9993
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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://cuatro-pr.org/sites/default/files/file/10156116203.pdf
- http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160e62c566fdb1---7473456538.pdf
- http://zpb-maciejewski.pl/upload/fck/file/jurapexutopudakiwo.pdf
- https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f437b6d6191---33447562489.pdf
- https://www.engltg.com/wp-content/plugins/super-forms/uploads/php/files/18d514546aadbc0e497dee6cb87b1cca/lepawugobovelatudu.pdf
- https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/a6d39abd7d966bb169dd89c03019d9bb/penanuvamivowa.pdf
- https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/d95eddd41504eee5a3f3cf343b9bd7c6/nexijuzidile.pdf
- https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5cfd7e3594---28996037434.pdf
- https://outsourcedbackoffice.co.uk/wp-content/plugins/super-forms/uploads/php/files/1d18275f7ed7d1326b64bcf42335cd60/16302165772.pdf
- http://be1971.com/clients/a/a1/a19be2fc4cf8b198b52f296748481ce5/File/38603398720.pdf
- http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/adf7cad83de8257dc69383bebe4b23f2/7066783498.pdf
- https://dreamscapes.ca/dream_scapes/userfiles/files/39558297182.pdf
- http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/00415f038c6e7a0ebee7987d92f76260/59562638332.pdf
- http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/gk5khpm98p6f76iu9hb4qs0mf5/gegulovufafavebiru.pdf
- https://ytdrive.com/CKEdit/upload/files/68069468561.pdf
- https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/fa039799d801c1150493c2b151cb1b42/72611319003.pdf
- https://www.karavanlakesfet.com/wp-content/plugins/super-forms/uploads/php/files/0ad8379af98ad390c3c6753f12f5a8c2/5044702957.pdf
- http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/160bc9da131778---wedepasiva.pdf
- https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/b75b1fd892d9748b2f80e459bb787046/nexakaxasigupemefaxo.pdf
- https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/1p014ildoq9ve17limflkk1lcb/zalij.pdf
- http://tavernadelsnoguers.com/wp-content/plugins/super-forms/uploads/php/files/4cd1226ad38ee4c33bf7bcfa0514e975/raname.pdf
- http://toyotaquangninh.org/data/dulieu/files/81422989674.pdf
- https://karinbentum.nl/uploads/file/55563529795.pdf
- http://matstravel.ru/userfiles/file/zakufojevusirogopuvuvut.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=patrones+de+zapatitos+tejidos+a+crochet+para+bebes
- 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_off0000d264.bin9db7e056db3396a6c8e4901b074f9f9345dc7de3f6fad7a5e436d5f9d1b06625 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD264 | 10896 bytes |
font_01_sfnt_off0000eb54.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB54 | 16792 bytes |
font_02_sfnt_off00010366.bin58b0be273b59d6738c68338bafc897ee4efb9cd5aae6c1411f3574e12dc762f5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10366 | 17264 bytes |
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