MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded URLs, many of which point to disposable hosting or compromised CMS upload directories, indicative of a link farm designed for phishing or SEO poisoning. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body is heavily obfuscated and appears to be non-readable content, further supporting the malicious nature of the file.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
Heuristics 7
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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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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://maybaobidinhdinh.com/upload/files/35426854786.pdf
- http://bnblspecialities.com/userfiles/files/nuxekekalinuromaxutu.pdf
- http://draftingfloorplan.com/ckfinder/userfiles/files/tulonuwidekukozikexuv.pdf
- https://altaitur.com/ckfinder/userfiles/files/mepevegowisebimimoxod.pdf
- http://mp-hd.de/data/aktualnosci_imgs/file/88769258804.pdf
- http://chemonova.com/FCKeditor/file/levajokukunijuxatugorejor.pdf
- https://motelandratecuci.ro/userfiles/file/24989607247.pdf
- http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/46e80a9678c74245bbf2737f9f7fe080/zixogajopagajukagigu.pdf
- http://pho32shabu.com/uploads/files/63336163035.pdf
- https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/1613ff6c8c6f73---85752395008.pdf
- http://xn--80ab1a9a.xn--p1ai/sadm_files/xukuniwozikusire.pdf
- https://myshalewell.com/userfiles/file/pebipaferajawajoxagono.pdf
- http://damosushipleasanthill.com/uploads/files/19948582796.pdf
- https://theurbanthinktank.com/files/25673031314.pdf
- https://vanphongphampmc.com/upload/files/logisamiverena.pdf
- https://chief-moving.com/editor_upload/file/18360752879.pdf
- https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141ae7f406d8---wilesadegapepugizexefadid.pdf
- http://dtyxbpzx.com/filespath/files/20210909221828.pdf
- https://walterchiropracticclinic.com/home/walter/public_html/ckfinder/userfiles/files/60533989114.pdf
- https://przygodanaukrainie.pl/admin/ckfinder/userfiles/files/pizonagupajapukaboxeva.pdf
- http://tylincms.com/userfiles/files/31200719603.pdf
- http://anthonyjcincottalaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/9672551089.pdf
- http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/161432b87cf4a2---61228589712.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=angry+birds+rio+2+play+store
- 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_off000116c9.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x116C9 | 16792 bytes |
font_01_sfnt_off00012edb.bin97b3d7125feb98cd9e00524594e6817fa32f4df2e0639c040949184f27f6a31c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12EDB | 18344 bytes |
font_02_sfnt_off00015ef1.bin0a8706fa4977a78337a932e39d526a58d20c9571e19a3650f10a95b82ebb0b88 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15EF1 | 10924 bytes |
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