MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. It contains a link farm pointing to numerous compromised websites and disposable hosting, suggesting an attempt to redirect users to malicious content. The ClamAV detection further confirms its malicious nature, identifying it as a phishing trojan.
Machine Learning
- Nyx PDF Classifier malicious score 0.9952
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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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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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://csc025.com/userfiles/file/20210607080602_odgl9y.pdf
- http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606f16d3dc511---2526693361.pdf
- https://corghialberti.it/file/pixogisesinomulurejiwop.pdf
- https://fablab808.com/nbloom/fckuploads/file/sibaw.pdf
- http://akicgiyim.com/userfiles/file/tapijekovegegozoziw.pdf
- https://bkht.vn/userfiles/file/15477701236.pdf
- https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/160858a3b7baeb---gusolaxino.pdf
- https://islandsvefir.is/wp-content/plugins/super-forms/uploads/php/files/hvpmldhfrvkudgeq90b1ftef58/92564241339.pdf
- https://www.synergyheart2heart.team/wp-content/plugins/super-forms/uploads/php/files/3m31kqlkeshk8ast0bfgi5fg3d/39812561385.pdf
- https://mariellatriolo.it/public/file/69600964380.pdf
- http://playfromhome.org/clients/4/49/49939bf6a151252ba1adfe53d1befa29/File/vabupaxe.pdf
- http://alliance-ltd.com/userfiles/73940180049.pdf
- http://innotack.com/userfiles/files/53819742282.pdf
- http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160e4459f17cd4---refowowejopuvamax.pdf
- http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/16086939252fd2---63898940464.pdf
- http://chupanhnoithat.vn/upload/files/55411629954.pdf
- http://archerelectricsupply.com/userfiles/file/63688276816.pdf
- http://bajcsidavidfoto.com/_user/file/96071179557.pdf
- http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac9fc5050a0---32670228489.pdf
- http://grandinhr.eu/images/user/file/leziduwagisez.pdf
- https://outsourcedbackoffice.co.uk/wp-content/plugins/super-forms/uploads/php/files/1218d72f418b54eeae90c1d368b650de/91007759834.pdf
- https://popa.com.br/wp-content/plugins/super-forms/uploads/php/files/c3fc365cc9b44c59c416f90b8145dd49/nenujonexuferuxigamapur.pdf
- https://www.corridar.com/wp-content/plugins/super-forms/uploads/php/files/nt81d0nbi24296etvsjbdm5vaq/gamasijazebowuwoj.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=how+do+they+test+you+for+trichomoniasis
- 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_off0000f0f6.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF0F6 | 16792 bytes |
font_01_sfnt_off00010908.binb7c74d029ca7c0b0b592597ad90329efd989243ba3ee277dd65ebe7fdb1552c6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10908 | 17452 bytes |
font_02_sfnt_off000135ff.binab552d37faeea3c8fec0362d42dcd5e7a35aaa514f2e77ec071c836d0616c532 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x135FF | 10984 bytes |
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