MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised WordPress upload directories or disposable hosting, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. The embedded JavaScript is a common technique for exploiting PDF vulnerabilities or initiating further malicious actions.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://shrlie.com/upload_fck/file/2021-9-14/20210914145847665953.pdf
- http://clingac.com/d/files/lafov.pdf
- http://art-wonders.com/ckeditor/ckfinder/core/connector/php/uploads/files/togujazipu.pdf
- http://xnucleus.com/members/member_images/files/55451476936.pdf
- https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137f7b93fe93---lutiwokavotoz.pdf
- https://imapcb.org/wp-content/plugins/super-forms/uploads/php/files/549e4710d98437fd56f727b4af2c7ca3/xisafa.pdf
- http://msdoubrava.cz/foto/images/file/fedewasizixebibovewevaku.pdf
- http://music-saikung.com/ckfinder/userfiles/files/57212531587.pdf
- https://deniz-sogutma.org/img/userfiles/file/bavejur.pdf
- https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/161419f805af08---80868505387.pdf
- http://www.propper-droppers.nl/files/file/11251086320.pdf
- https://lyonsinn.com/nbloom/fckuploads/file/11142884348.pdf
- http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/16146755004c08---83500577468.pdf
- http://dent-pro.cz/pic/file/83684630181.pdf
- https://euroialinsol.ro/userfiles/file/kisutebibawezal.pdf
- https://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/ddior6etavjnvgppusd9tb6256/93947311327.pdf
- http://hotelamadeustorino.com/userfiles/files/14737485654.pdf
- http://kommunikator.nu/demo/userfiles/file///buwemew.pdf
- http://csc0851.com/userfiles/file/20210911031104_1gem6a.pdf
- http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/sb4nov7vbajcurm24nt1nctk52/wabonokemadab.pdf
- https://semangkabiji.com/contents/files/29265570955.pdf
- http://xn--80aab8aioy.xn--p1ai/userfiles/file/duseposalutogabugogo.pdf
- http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131264545d0a---30880018092.pdf
- http://ameshamagazine.com/js/upload/files/femufurowamegugu.pdf
- http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16140255604979---62678890483.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=how+to+start+mac+recovery+mode
- 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_off0000de42.bine68614359152a2af491ad90e1841f1cb12fb23311a3a44eadb2d3cfc900efd1d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE42 | 17964 bytes |
font_01_sfnt_off00010c1b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C1B | 16792 bytes |
font_02_sfnt_off00012432.bin416c86f1712f37118e863e2abff208764b9ca68923c2fe47e38c711a527cc852 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12432 | 10544 bytes |
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