MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. Numerous embedded URLs point to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, providing no direct user-facing lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
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://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607f3a69f387c---9523783499.pdf
- http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be6fd954319---xunepu.pdf
- http://aj-logistics.com/stock/userfiles/file/dejidemijozifagatazi.pdf
- https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/21e2acffe9e532b579c12072c71ac4d4/45069398178.pdf
- http://dirabrealtors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075db1b90d83---64787528528.pdf
- http://www.franklinwebdesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160740565a6762---8082520875.pdf
- http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160855e73ba435---fimitazuziwigidaworutikil.pdf
- http://sjhrz.com/images/upload/File/70527744907.pdf
- http://4grd.com/cmsimages/file/sowikogojipox.pdf
- https://gbeequestriansurfaces.com/wp-content/plugins/super-forms/uploads/php/files/j1rulvpohs36kd15va7atnv1g0/87251970536.pdf
- https://anandamsanyal.com/userfiles/file/68027046158.pdf
- https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/16086568181eb5---45520322586.pdf
- http://zulaikhatextile.com/userfiles/files/10547871457.pdf
- https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/nmrgnvk54vc8t3esuta7mlpf33/melarifesukegigijupuxu.pdf
- http://fotomil.pl/ckfinder/userfiles/files/xupixamudip.pdf
- http://czdashan.cn/uploadfile/file/2021050517382173499.pdf
- http://31kouqiang.com/userfiles/file/1623701250.pdf
- https://www.kbstephens.com/wp-content/plugins/super-forms/uploads/php/files/3fc4fab7a463ef592841a33556ad3bb5/40156490383.pdf
- https://agatanorek.com/files/file/tuxejakebever.pdf
- http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/16072cc63bd5d8---fuxenimilolomosisux.pdf
- https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/9lkvte8atr4n6gjsd5ad8l9lom/16746655950.pdf
- https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/jrsecto6a9gfaao8n9d0vtlt74/vasubobu.pdf
- http://mxagproducts.com/upload/browse/file/68387990539.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=detention+and+imprisonment
- 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_off0000e06b.binc4e72b27466684254705ab71fe610e33298df5dd1c6b369df835cda0520bb781 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE06B | 10508 bytes |
font_01_sfnt_off0000f84d.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF84D | 16792 bytes |
font_02_sfnt_off0001105f.bin569426e2b64e5e37d415d1c7e7aed8daf8d8b1e960e66804ef3c119916a628a2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1105F | 17276 bytes |
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