MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links pointing to compromised WordPress upload directories and other potentially malicious sites. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall pattern suggests it is used to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9835
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 https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3eb2c0f283---64570631127.pdf
- http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607b9b90a414a---59975031542.pdf
- https://b2cexpressdemo.com/userfiles/file/nuzatewokemarexa.pdf
- http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/1607006455968b---lanofizel.pdf
- http://frankslawfirm.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/nusamife.pdf
- https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/c052c4a425c9abb8c8d4a035296b20de/38185660908.pdf
- http://md-servicios.com/userfiles/file/52429078564.pdf
- http://sotel-perm.ru/site/file/35243830047.pdf
- http://mobydick-band.de/fckdata/file/mapevajibokuvanune.pdf
- https://deconkhoemanh.com/wp-content/plugins/super-forms/uploads/php/files/4lo778m2bthm9q6q2vq4ckf6i1/wugonumukak.pdf
- http://www.mywil.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1607a56e83cc05---86962190001.pdf
- https://kisikana.hr/userfiles/file/vasalagelifidojixo.pdf
- http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/1609c30b18416a---10574708810.pdf
- https://www.nosolodespedidas.es/wp-content/plugins/formcraft/file-upload/server/content/files/160c0c44137348---446004390.pdf
- https://makemycake.gr/wp-content/plugins/super-forms/uploads/php/files/rm7ogha3bq578bgitmhg89g99h/55821163139.pdf
- https://europartner2.pl/uploads/karafa.pdf
- https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091e5ea74893---20916663084.pdf
- http://dobryremont.pl/ebobas/portal/app/webroot/img/tmp/file/16220159420536.pdf
- https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/l89v07gg8h18771nhjt3eddm15/22225343357.pdf
- https://makiriaszto.hu/ckfinder/userfiles/files/mafexanesibepodawovupinu.pdf
- https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c88578d9c95---ditige.pdf
- http://joshuadacosta.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074af0a4273a---zitekuvexuladap.pdf
- http://alituncer.com/userfiles/file/pojomigijo.pdf
- http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b05426a523b---72751593806.pdf
- http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160701fb82f45c---62934211615.pdf
- https://reitinguok.lt/userfiles/file/1572718216.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=calculate+the+molarity+of+ethanol+in+water
- 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_off00010074.bin2037ce659dd0323fef5382db21513a7bd4e9f0b05d55ad4b5fb8b5320c6c226f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10074 | 10764 bytes |
font_01_sfnt_off0001191e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1191E | 16792 bytes |
font_02_sfnt_off00013130.bin35e52ebfcc6f66a68baeef2b5ef416f057a807541d8607806be2091926516ad5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13130 | 17348 bytes |
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