MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous links, many pointing to compromised WordPress sites hosting other PDFs. This behavior is indicative of a link farm used to distribute malicious content, likely for phishing or malware delivery. The ML classifier and ClamAV detection strongly support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9950
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://vibrosystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607670d932f8e---rejukuponiduromi.pdf
- https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a84669bb12c---sirugovizitikusojedow.pdf
- http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608d7a91674a0---duxukatuna.pdf
- http://whalesart.com/uploadfile/file///2021061804090838.pdf
- https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/e55772bb01b202e4691422356d6438c9/sukupupeluzavexavivuxitez.pdf
- http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/160c69da49948d---xibapeper.pdf
- https://ktmcollege.org/public_html/userfiles/file/29327557111.pdf
- http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/1606fc1608efb7---bafokuzujavikiwit.pdf
- https://www.brightfieldbusinesshub.co.uk/wp-content/plugins/super-forms/uploads/php/files/t0m8rig6qmufm9m7sq3lbq7vjn/tewasesor.pdf
- http://yjccnc.com/upload/files/62691575331.pdf
- http://chataphan.com/file_media/file_image/file/pubakenofekowoxe.pdf
- http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160967bfe59c50---fajakejafowetaf.pdf
- http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/1607a991056305---69650824125.pdf
- https://www.aeap.com.br/ckfinder/userfiles/files/98357701852.pdf
- https://ljlconst.com/admin/images/file/xupajutuzelika.pdf
- https://oiweld.com/wp-content/plugins/super-forms/uploads/php/files/d709e0f3183e496b86a57f02184df20e/79897284379.pdf
- https://www.erenang.com/wp-content/plugins/formcraft/file-upload/server/content/files/160808aa32c3fb---42897362526.pdf
- http://lushexperiences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f7dfdb2fea---5444039667.pdf
- http://nenkin-t.com/upload_img/ck/files/tevisovafuvelosez.pdf
- http://alltechsro.cz/files/34354128669.pdf
- http://roomyab.ir/basefile/roomyabir/files/kabefiw.pdf
- https://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608543c8b2c0e---63296920441.pdf
- http://fritz-fahrlaender.ch/download/35282780182.pdf
- http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a05c9e63dff---wilusesurutonevel.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=ordinary+minister+of+baptism
- 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_off00016d54.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x16D54 | 16792 bytes |
font_01_sfnt_off00018566.bin34276e9748f285cd911b8e6992ee64eac703ce9511079cdb5cf98dd3b6efeccc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x18566 | 17248 bytes |
font_02_sfnt_off0001b226.bina08f9069e628c143a8406278f4fadc5c24712aa1d27121aa40e7c414559cda82 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1B226 | 10892 bytes |
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