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 or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a non-clustered link farm on disposable hosting, and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' suggests links to compromised WordPress upload storage. The embedded JavaScript likely facilitates the redirection to these malicious sites, contributing to a phishing or malware distribution attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://buyyoutubecomments.com/ci/userfiles/files/jegadafoponuxogurilufoga.pdf
- http://protok.pro/upload/files/wekogonumujenupo.pdf
- http://aias.pnu.ac.th/ckfinder/userfiles/files/tejefiwumipusi.pdf
- http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/16145e889b4c47---xevutusabajoxuripefud.pdf
- http://bephoangdung.vn/uploads/ckfinder/files/ragopatutapadowalel.pdf
- https://hgindustrial.eu/userfiles/files/gafokuxite.pdf
- https://giorgiosantinelli.it/file/17918854443.pdf
- https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/9d54030f29cb4e7cfc8f5d070b5cea47/sixuj.pdf
- http://juncheng.tw/upload/files/76410098710.pdf
- https://parfumzone.ro/files/file/91020206154.pdf
- http://lambanghieuquangcaogiare.net/vietkiendo/upload/file/92722779655.pdf
- http://studioarchperissinotto.eu/userfiles/files/21843720044.pdf
- https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/tmp/bopunoz.pdf
- http://hrudolf.com/userfiles/vifogupininozudaberubiko.pdf
- http://zhizhencn.com/filespath/files/20210910051902.pdf
- http://ttccid.com/userfiles/file/56710912629.pdf
- https://mediaget.ru/userfiles/files/60973715590.pdf
- https://konzolstudio.ro/uploaded_files/file/44121231275.pdf
- http://www.giuseppe.ru/ckfinder/userfiles/files/sukemuvovar.pdf
- https://sanidom.pl/img/file/lexetetizefofikev.pdf
- http://ncfc.com.tr/ckfinder/userfiles/files/larirojarimoragodol.pdf
- https://rougezenekar.hu/files/file/totenetupenejeteto.pdf
- http://m-styleauto.com/js/upload/files/91112233743.pdf
- http://www.sun-green.eu/ckfinder/userfiles/files/49209156719.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=chikki+cloud+gaming+mod+apk
- 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_off0000d736.bin01650ad03eab762995980b02110219ab1d209ca862435e08a7969e8faef9198f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD736 | 19476 bytes |
font_01_sfnt_off000109c6.bin5a6d346b4f1d7d41f9cbe52ce6fa5b6a88068b350cc28d292f3ac30af814382a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x109C6 | 10688 bytes |
font_02_sfnt_off000121d2.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x121D2 | 16792 bytes |
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