MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms or appear to be part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The document body is unreadable, but the heuristic findings point to a malicious link farm attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9756
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://erdenetpost.mn/userfiles/files/petofoxidafegofiwuwigidol.pdf
- http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a13b40600ec---rumag.pdf
- http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160881aa1d17f4---12496149762.pdf
- https://technok.cz/wp-content/plugins/super-forms/uploads/php/files/e97ad98e41bc393be7a7a718fbb96685/difapekanesuzumemotazi.pdf
- http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/160858e369e995---sejazasufewelujera.pdf
- http://kwong-cheong.com/userfiles/bukogukasexixegijuke.pdf
- https://qpshouse.com/upload/image/file/wiwawewenolokoruxig.pdf
- https://hotel-la-licorne.fr/userfiles/file/5446238561.pdf
- https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/1dc8c6b8ea8833e8157e5e87c634104d/33162446386.pdf
- http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/160884e8c6c8a6---42352844798.pdf
- http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/16087d0146f354---mezaloz.pdf
- https://lescourailleurs.com/upload/editor/file/dulanil.pdf
- http://righetti1970.com/clients/872956/File/23900663274.pdf
- http://anhuizhkj.com/upload_fck/file/2021-5-4/20210504134857564042.pdf
- https://desertflying.club/wp-content/plugins/formcraft/file-upload/server/content/files/1607c3365bed6d---takagisowuboz.pdf
- http://webscape.co.bw/wp-content/plugins/formcraft/file-upload/server/content/files/1609affbba5f48---75233955852.pdf
- http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/967f4638d683eeeb472de91cea3306b0/40007082673.pdf
- http://newgrids.com/userfiles/file/21256173185.pdf
- http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/q3vs8t2tnrsnqu87dectdqq6p4/lovumodivaz.pdf
- http://madveras.com/ckfinder/userfiles/files/lotudumuzolovemeref.pdf
- https://arvikabc.com/images/uploadedimages/file/69650610855.pdf
- http://4bx.pl/public/file/22105510709.pdf
- https://burgaseguros.com/userfiles/file/36288751525.pdf
- http://bloomx.com/sites/all/sites/bloomx.com/files/96063471552.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=weighted+average+score
- 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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0001b32c.bin325c5f5cda05429ae92d15c23118ca1b8712e485108c584e1e30b0ff615913b7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1B32C | 16084 bytes |
font_01_sfnt_off0001c858.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1C858 | 16792 bytes |
font_02_sfnt_off0001e06f.bin064985ed9699419b2342a61221f67a9c46f28efb57c6cf6943b9308f1126c5a7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1E06F | 10556 bytes |
font_03_sfnt_off0001f884.bine5f6e8aed583147f0736677d8d513e53cded24b0cbf801d8b59f862aee5495dc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1F884 | 19476 bytes |
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