MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous URLs that point to various websites, many of which appear to be compromised CMS uploads. The presence of 'utm_term' parameters suggests an attempt to track user clicks, common in phishing or SEO-based malicious campaigns. No scripts were extracted, but the overall structure indicates a redirection mechanism likely leading to malicious content.
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 https://coretry.ru/uplcv?utm_term=tiny+centipede+like+bug+in+house
- https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/41eb33b0132c6ccca48f0b70f75a7d44/20647960944.pdf
- https://tort-art.ru/userfiles/file/17619872473.pdf
- https://anctools.com/ckfinder/userfiles/files/sirepasenajabonofa.pdf
- https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/16083fce841b14---solosenuwapakerofad.pdf
- http://www.gcsystem.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1609746c38b19e---lideg.pdf
- https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/bk67phh5vss1dc9v8385on9skl/54044640905.pdf
- http://bagiez.de/userfiles/file/69842494072.pdf
- http://chekeeh.ir/basefile/chekeehir/files/73436369528.pdf
- http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607ab891ee905---9526965734.pdf
- http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c12fa50449a---minupevagagonexaliso.pdf
- https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/dk038nscec9t4fh5srt723jsqs/47069101599.pdf
- https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//13518684141.pdf
- http://wuxihemei.com/ckfinder/userfiles/files/20210619_182313.pdf
- http://fitviewer.de/files/file/58006953634.pdf
- https://balajitutorial.com/admin/userfiles/file/32972998827.pdf
- http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16079a4af75ce7---gefun.pdf
- http://lorichphoto.com/pictures/file/gabogofizake.pdf
- http://wintec-samu.hu/uploads/files/rumimabidajexuju.pdf
- http://5m-tti.com/uploads/image/files/xevamigumugonadufasu.pdf
- http://accessprecision.com/userfiles/file/jewipaxanezapus.pdf
- https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/aba361893f2edb7a969b36a93350d6d4/89116465107.pdf
- http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/1609a96e98216c---vewukofesaxuvigaka.pdf
- http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/pctbrhbd8bfjsck6epdrmb8op5/gumejunigobakomonojujor.pdf
- 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_off0000f0a0.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF0A0 | 16792 bytes |
font_01_sfnt_off000108b2.bin1aba6b4c8a2f1f9adc8b3c378b30db04be28f5675e3a113f99072244391585b7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x108B2 | 16692 bytes |
font_02_sfnt_off000133fc.bin8d690eb9885e74d6ac127290c0db9437738b238bbdfdb54eef8271d689afae2e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x133FC | 10940 bytes |
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