MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised WordPress upload directories and disposable hosting, suggesting it functions as a link farm to distribute phishing or malware. The presence of external URIs and link farms points towards an attempt to redirect users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
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 https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/161355e0c6a7e2---37568911572.pdf
- http://kuppersbusch.hu/userfiles/files/89838022652.pdf
- http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/1613513ef8210c---23791627530.pdf
- http://iktoktatas.hu/files/file/71535642386.pdf
- http://naitikfashions.com/ckfinder/userfiles/files/5808397638.pdf
- http://aotwresort.net/ckfinder/userfiles/files/51463123222.pdf
- http://adacu.org/userfiles/file/20210912035228.pdf
- http://status.cz/UserFiles/File/67378809877.pdf
- http://drapa-technika.cz/UserFiles/File/buvopunepitadugizixenufam.pdf
- http://cdseoulps.com/uploadfile/fckeditor/file/tupoximusumimogek.pdf
- http://www.somdattabasu.com/fckimages/file/61692970034.pdf
- http://cambresisemploi.fr/ckfinder/userfiles/files/84164022557.pdf
- http://kgmda.com/upload/files/tovoporaxofisowuwob.pdf
- http://adirondackseafood.com/ckfinder/userfiles/files/kevagugu.pdf
- http://lejonhund.com/upload/zomawaburalojan.pdf
- http://kfoodntea.com/dataroom/file/56437630371.pdf
- http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/0rqin9r6gsmk0ipp923rfsnh21/walatevosefolokuzanajatet.pdf
- https://podimercrm.com/img/files/40136529894.pdf
- https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/3c39e8616169058f0d9dc29886601dae/pewomazonafidazijel.pdf
- http://unibox.lv/files/text/vemilitugowuxax.pdf
- https://naucharts.com/ckfinder/userfiles/files/48992427878.pdf
- https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/8b7e25b55e0e62388ea3fe8ee7a5ff36/robevutaxa.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=beauchamp+and+childress+4+ethical+principles
- 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_off0000b542.bin794b141ccff3e1afb88bdce3d929558d0f523d010018a6feeba1f80ee987538f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB542 | 10892 bytes |
font_01_sfnt_off0000ce43.bine1784c1d4e3186386f7d982c9038b3d0b8b6125ccce43c980c83297dc53c3bb6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCE43 | 16320 bytes |
font_02_sfnt_off0000f828.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF828 | 16792 bytes |
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