MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by multiple heuristics as a link farm, with several URLs pointing to compromised WordPress upload storage and disposable hosting. The ML classifier and ClamAV also identified it as malicious, specifically a phishing trojan. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, suggesting it's not intended for direct user reading but rather to host links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
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 http://a2itsolutions.com/chop/multimedia/userfiles/file/darafi.pdf
- https://www.aicsmindia.org/ckfinder/userfiles/files/wibesefuvutarofoseferez.pdf
- http://pereplanirovkaoblast.ru/pict/file/40226075395.pdf
- https://vargyasnekonyveles.hu/kepek/other/file/37852980768.pdf
- http://gowowdeli.com/uploads/files/nupuwexawuvupevuremur.pdf
- http://intrinhgia.com/admin/webroot/upload/image/files/64266858182.pdf
- http://around-sicily.net/userfiles/file/wekurijozinojivumofoji.pdf
- http://colantuono.it/userfiles/files/xawus.pdf
- https://sandp-engineering.com/ckfinder/userfiles/files/kisuneriweladejebogotuxor.pdf
- http://ksiclubbiz.ksiclub.org/svnprojects/DHD/Source/images/files/41027370279.pdf
- http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/cf6617c8ddfd3693597de4b141dfc054/10240119307.pdf
- http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/161382976a22c5---72286397076.pdf
- http://kingkady.cn/uploadfile/files/jasojebovitonuzik.pdf
- https://alohasafaris.com/files/guniwubevixosujutokumo.pdf
- http://longruiglass.com/ckfinder/userfiles/files/20210904_065344.pdf
- http://hvezda-pardubice.cz/files/file/69864144321.pdf
- https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/3984d57e1f89b933124294b91c5d40a4/gaxopebofugiridifu.pdf
- https://digireg.org/upload/tivimelalurowim.pdf
- http://nsk-nalogov.net/upload/files/badizogajafurazu.pdf
- http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/16132cb80f405d---91604225293.pdf
- http://haai.org/upload/file/18398809797.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=top+serp+tracker
- 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_off0000f77d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF77D | 16792 bytes |
font_01_sfnt_off00010f8f.bin3a2e067b3c5300d6c8ca2b2b14361e78a6dcf4ed92c4f8603f9b889d1ca7f904 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F8F | 17520 bytes |
font_02_sfnt_off00013d21.bin17426bd98481e95dd297c0c16c4255680ff7b1ef7258a458912f907558649df2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13D21 | 10180 bytes |
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