MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file contains embedded JavaScript, which is a common technique for executing malicious code. The heuristics also indicate that the PDF acts as a link farm, pointing to multiple external URLs, some of which are hosted on compromised WordPress sites. These links likely serve as a lure or redirect to a phishing page or a second-stage malware download. The ClamAV detection and ML classifier further support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9840
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 https://threadworx.com/thread/admin/uploads/file/25475274555.pdf
- http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614bad52c4ba0---57567511366.pdf
- http://www.martiusstaden.org.br/js/ckfinder/userfiles/files/kabiziduzewalutugejowop.pdf
- https://diamond-marketing.cz/soubory/xufuzuzafirikubisuna.pdf
- http://thedewakohchang.com/image/upload/File/5447341840.pdf
- https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fb76b9da73---xekulizowebu.pdf
- https://hasekei.jp/userfiles/file/69127788801.pdf
- http://whuntex.ru/userfiles/file/jevamipezugamapej.pdf
- http://www.jindatunnel.com/up_files/file/83760423550.pdf
- http://xn--o39a91gvwm83kbsn.net/FileData/ckfinder/files/20210919_8378E608844379DD.pdf
- http://ghibms.com/userfiles/files/62700029689.pdf
- http://mondoacquapiscine.com/userfiles/files/totetuzilipubifuwav.pdf
- https://betamachinery.sa/other_files/File/jakafajafipagal.pdf
- https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141bcfbb77fc---vixunimugelojexifago.pdf
- http://mobilahomedesign.com/userfiles/files/tarasudawebugajemitud.pdf
- http://joltiy.ru/uploads/files/zowab.pdf
- https://dacoma.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1614879f47c505---13609094479.pdf
- http://www.globalnautique.nl/upload/files/bebakewakenowedovuxugin.pdf
- http://nsmpublicschool.org/slbdavbatala/userfiles/file/42187454650.pdf
- http://sensitiva.fi/UserFiles/File/48368936418.pdf
- http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/16147f8753863d---24681307663.pdf
- http://lynxauto.ru/userfiles/file/xamisanividijulu.pdf
- https://szabolcsipeter.com/userfiles/file/93185568211.pdf
- https://dolaodong.com/userfiles/file/sufesawigeninajegumej.pdf
- http://kuryakyn.ru/userfiles/file/nekinoga.pdf
- https://turismopontevedra.com/ckfinder/userfiles/files/96644603323.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=euro+truck+2+android
- 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_off0000b419.bina0163c063dc952f108775fc034271393206c46d07c1e94393e96f232245e44eb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB419 | 17624 bytes |
font_01_sfnt_off0000e114.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE114 | 16792 bytes |
font_02_sfnt_off0000f92b.bin3cc75d0900b8fbb8619288ed22a208248e3afa7349c5b2ebcd8c94d5a8c2e888 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF92B | 10312 bytes |
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