MALICIOUS
172
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript, which is a common technique for executing malicious code. The presence of a link farm pointing to compromised CMS uploads and disposable hosting, along with a high ML classifier score and ClamAV detection, strongly indicates malicious intent. The embedded JavaScript likely serves to download and execute a second-stage payload or redirect the user to a phishing site.
Machine Learning
- Nyx PDF Classifier malicious score 0.9968
Heuristics 8
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://career-id.org/ckfinder/userfiles/files/kuperebawutotatul.pdf
- http://bjaimama.com/data/upload/2021/09/file/202109021253564689.pdf
- https://buzascsaba.hu/userFiles/file/74822563582.pdf
- https://svenjakretschmer.com/ckfinder/userfiles/files/nawopubev.pdf
- https://whitepalacegrill.com/userfiles/15930659589.pdf
- https://kolegium.inaheart.org/upload/files/93843013961.pdf
- http://maginsaatmetal.com/resimlerfiles/vokulinopenozokimidipuxal.pdf
- https://adeptos.clevercloud.pt/images/items/files/64890141627.pdf
- https://unique.global/wp-content/plugins/super-forms/uploads/php/files/b6e87e284f13cd88bc6a1b1098e29eed/76163956059.pdf
- https://sikanderajam.com/Robinson/ckfinder/userfiles/files/11278420461.pdf
- http://remobudostol.pl/pliki/vogifetupebejaripapo.pdf
- http://engineersclasses4competition.com/files/others/vakalajexid.pdf
- http://biogenetec.tw/image/files/20210902_111824.pdf
- https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/a104f5805ef029b50c2ffa2574c9b787/gabovigevi.pdf
- https://abriganature.centralcms.cloud/galeria/files/71160466257.pdf
- http://mundori.com/js/ckfinder/userfiles/files/sizidolep.pdf
- http://myhomeinparis.com/userfiles/files/ravuga.pdf
- http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134b8c1f0715---87193978167.pdf
- https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/02c6d9b89ea115f7eeb5747d3361918d/55786228951.pdf
- http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16139423b50ecb---fofokixo.pdf
- http://jezirka-biobazeny.cz/UserFiles/File/wobavalofepobimujubuge.pdf
- http://restauraceeverest.cz/userfiles/file/bebigexoki.pdf
- https://xuantruongtech.com/images/ckeditor/files/nopuvivadepifev.pdf
- https://jmtours.co/aym_image/files/85702232202.pdf
- https://vinaarc.com/app/webroot/files/ckfinder/userfiles/files/modoluwifafo.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=after+we+collided+full+movie+free+putlocker
- 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_off00010637.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10637 | 16792 bytes |
font_01_sfnt_off00011e49.bin333deea11e06e2983466771b9384a67313df9d8dba7f55a3c7f01eadd57a59c9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E49 | 19536 bytes |
font_02_sfnt_off000151b9.binfed1e642c6f114f3991f60d7c6409b6da3bc076ff5b131ea090e00c9b5e02a11 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x151B9 | 10672 bytes |
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