MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous links pointing to compromised websites, identified by heuristics like 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM'. The ML classifier and ClamAV detection strongly indicate malicious intent. The primary function appears to be redirecting users to potentially malicious content hosted on these compromised sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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://bookblog.kr/data/file/files/4022066930.pdf
- http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/161361e0ea9131---22967259355.pdf
- https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/507a1440ae0ea96702592a2b850be646/37065275982.pdf
- http://izumrud38.com/ckfinder/userfiles/files/70817269442.pdf
- https://renhedc.com/uploads/files/202109061421312542.pdf
- http://ingore.cn/upload/files/davipegufegamekonolabulu.pdf
- http://mdbim.pl/ubezpiecz/obrazy/file/tapelepire.pdf
- https://postelezmasivu-zlin.cz/ckfinder/userfiles/files/57510532089.pdf
- https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/1c70543ab4517cd61146320f84218caa/xafok.pdf
- http://nppgursaraijhansi.in/ckfinder/userfiles/files/20971349611.pdf
- http://www.pattyn360.com/upload/forum/files/40483171532.pdf
- http://alkanboya.com/files/file///xadolebagalasarorir.pdf
- https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/16144ba040758d---zobupolenivazof.pdf
- http://ehomerealestate.org/images/file/nowazilezuw.pdf
- https://iphone-odklep.si/vsebina/nulagedapemerujiguboxo.pdf
- http://noithatlekhanh.com/Images_upload/files/93935481347.pdf
- http://gr-chem.com/upload/files/zegiziduvidijikugavukujol.pdf
- http://kavtas.com/images_upload/files/30329082867.pdf
- http://kidzcastleschool.com/singhania/downloads/file/gozesosisizovujanade.pdf
- http://congseng.com/uploadfile/files/pedikixenorad.pdf
- http://zerosquareonline.com/file/97292990014.pdf
- http://auto4-spb.ru/public/images/ckfinder/files/lozanofunisewa.pdf
- http://forspeed.cz/ckfinder/userfiles/files/21854513260.pdf
- http://rayer.cn/d/files/godikipawoj.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=how+to+remove+sd+card+as+internal+storage
- 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_off0000d679.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD679 | 16792 bytes |
font_01_sfnt_off0000ee8b.binfa39dd942628e2397b15c7b2e766abfb269a0015dc0b90de79d7751bc54cc6e3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE8B | 17036 bytes |
font_02_sfnt_off00011a99.bin24393cbdb487681b12a85f63065da104081173468e5c459be0d9f9d333a79c0d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A99 | 10856 bytes |
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