MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was flagged as malicious by a machine learning classifier and ClamAV. It contains numerous links, many hosted on compromised WordPress sites, which is a common tactic for phishing or distributing further malware. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for these links, further suggesting malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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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QR-code redirect lure medium SE_QR_LUREDocument instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
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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://happysmilecard.com/uploads/files/bujuperadenu.pdf
- https://tselectromechanical.com/uploads/CKfiles/files/75367516241.pdf
- https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/2aa145571883397dce6d774344eae13f/33866095017.pdf
- http://irk-yoga.ru/upload/files/16406519303.pdf
- https://evrenmentese.com/upload/ckfinder/files/25812069167.pdf
- http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/054762d572ba387eebb50957d647a710/vedenavojobota.pdf
- http://dentali.cz/files/files/lelumupobozolibafibe.pdf
- http://airzo.net/userData/board/file/zuzekina.pdf
- https://natyabio.com/uploadfiles/18158591998.pdf
- http://schule.havonix.com/ckfinder/userfiles/files/71546649471.pdf
- https://promoform.coreform.it/uploads/file/zokomorugunimebixofev.pdf
- http://xn--80aer5aza.xn----htbdepbihnfb8cyg.xn--p1ai/ckfinder/userfiles/files/ludegemugili.pdf
- http://psychologkmalinowska.pl/ckfinder/userfiles/files/wozapuvemepumoluni.pdf
- http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135cf5104683---nipikili.pdf
- http://balletpanov.com/uploads/files/vuxepuretiboxuweburakek.pdf
- http://inkjetartandimage.com/Uploads/file/73063940503.pdf
- http://cichanski.com/Upload/file/batemi.pdf
- http://oreade-breche.fr/userfiles/file/42828393997.pdf
- https://ceccargiurgiu.ro/userfiles/file/jijupaluvewununifogutu.pdf
- http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/25dab7c7edd1cc3b211059beca3c2482/niwegituxadof.pdf
- http://dr-onesrl.com/userfiles/files/96618644091.pdf
- http://jilienjrubin.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/1890976401.pdf
- http://slxiang.com/v15/Upload/file/20219101028162211.pdf
- https://ehbo-oostkapelle.nl/userfiles/file/41711116464.pdf
- https://www.karelo.com/uploads/File/bufizekilexewu.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=cornerstone+wesleyan+church
- 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_off0000c337.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC337 | 16792 bytes |
font_01_sfnt_off0000db49.bine852f657031007ba78dabedfb752ffc4fa49dff75f00bcf37816743149acf05b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB49 | 16712 bytes |
font_02_sfnt_off0001060d.bin051e9caa6a971b460b801f3f4e8423e930609376a98d7a665bf28c5ee0f1a583 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1060D | 10568 bytes |
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