MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file contains a link farm, with numerous embedded URLs pointing to various domains. Heuristics indicate these links are hosted on compromised CMS uploads and disposable hosting, suggesting a phishing or redirection scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to lure users to download further malware or visit malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9893
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://divodizain.ru/ckfinder/userfiles/files/1838168915.pdf
- http://autoset66.ru/admin/ckfinder/userfiles/files/51471465609.pdf
- http://poultech.net/d/files/wiwebimetekaxivejuzalu.pdf
- http://op-gold.com/ck_image/files/bekekuno.pdf
- http://www.oneworldkarate.com/fckeditorimages/userfiles/file/xawotegalefem.pdf
- http://thepokewave.com/uploads/files/83415074680.pdf
- http://keystoparadise.com/userfiles/files/97491292873.pdf
- http://stevis.cz/files/file/14463814784.pdf
- https://mps-india.com/userfiles/files/libamu.pdf
- http://constantemails.com/userfiles/file/163085773857368733667.pdf
- http://cnex.cc/images/blog/file/83613231251.pdf
- https://themodernla.com/wp-content/plugins/super-forms/uploads/php/files/7b2b32daa20fe0e08f8f7619cfa9828b/63589039053.pdf
- http://ongxoanhdpe.vn/upload/files/57246307019.pdf
- http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135aad28b490---52166379920.pdf
- https://terracell.info/images/file/97709903883.pdf
- http://bukharageorgia.com/sites/default/files/file/53226646973.pdf
- http://xn--aknmedcal-wpbe.com/uploads/file/vizugo.pdf
- http://antitumor.org/filespath/files/20210912091249.pdf
- https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/v5kjn0hh44u0avvrh0ggstf2ag/sorapusawutag.pdf
- https://nurdagihaber.com/resimler/files/87217549474.pdf
- http://xn--80aab8aioy.xn--p1ai/userfiles/file/sataferukutedajeba.pdf
- https://people11people.gr/uploads/File/80511599012.pdf
- http://portakalweb.net/home/portakal/public_html/ckfinder/userfiles/files/96834626612.pdf
- http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16137b1a3cf5d6---93533062412.pdf
- http://flywings.sk/UserFiles/file/nopuz.pdf
- http://aaz.sk/editor_uploads/files/94960184982.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=pokeone+game+download+for+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_off0000b51b.bin97cc8f8567e4741bd266d2eb068cdce606cfc6e353da7b03fe85c26abeae35f9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB51B | 14976 bytes |
font_01_sfnt_off0000db02.bin957ad2cb695571766e6530d21914ba75cc0909d63dcebcce26bf2e664a4f037f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB02 | 10612 bytes |
font_02_sfnt_off0000f310.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF310 | 16792 bytes |
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