MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous external links, many pointing to other PDF files hosted on compromised websites or disposable domains, indicating a link farm designed to distribute malicious content. The ClamAV detection and ML classifier strongly suggest this PDF is malicious, likely serving as a lure for phishing or to download further payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9928
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 https://garglob.ru/uplcv?utm_term=understanding+human+anatomy+and+physiology+pdf
- http://reicar.dk/userfiles/file/nakujikumuzomonasurute.pdf
- http://plncse.hu/php_data/file/bibevamesiratawixi.pdf
- https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/160924ca2e34fc---93850130877.pdf
- http://rkmaster.ru/uploads/files/989268435.pdf
- http://xn--szabowski-tub.pl/userfiles/file/18673191233.pdf
- https://big-cash.de/wp-content/plugins/super-forms/uploads/php/files/g7t7eqo66glu1m9ls9o85hk362/67489120573.pdf
- https://him-home.ru/wp-content/plugins/super-forms/uploads/php/files/b9633ed0431599978912cae6600d5930/rajugotobuzaninutetakujuf.pdf
- http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b080b695056---jamudovekujesupotaj.pdf
- https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/lhino26dviqdadq19ktt7kcqbq/pijisemazaz.pdf
- https://wamsconference.com/wp-content/plugins/super-forms/uploads/php/files/53c923a3911106fdf2b0206ed4a5997a/xizunulidujuxulitipire.pdf
- http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16099eacfc18de---wajux.pdf
- https://stallion-international.com/userfiles/file/1404058326.pdf
- http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/60r58ho150130se9nqbtn4urkb/12153448601.pdf
- https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/t7dcjrro97hle5hdndbi2lic7j/kedisilukoxuwojekiwironiz.pdf
- http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/eqvsvrfn5f7t5qrobi1vdsqjn6/tesasirefu.pdf
- https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/0se7iker1nsbnqf4at137mspf0/42002359867.pdf
- http://effektfilm.de/files/file/zevilesikapivexinadedo.pdf
- http://hy-concrete.ru/d/files/kopilekufinetux.pdf
- https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/160ac92febaa09---34018365241.pdf
- https://www.ergunaygoren.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080e76de747a---jerigawezafesidadapo.pdf
- http://stevis.cz/files/file/pukozufo.pdf
- https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/160a9567f647e8---wizufizugurojaxara.pdf
- https://oddluzanie.net/userfiles/file/18155723499.pdf
- http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160bc3ce850936---kemetiwigogeraxo.pdf
- 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_off00011fd7.bin5c08e6f5a3bd99efd10bbbce99168d267312f4328bf2e7fb4475451ceaed210f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11FD7 | 17620 bytes |
font_01_sfnt_off00014e2d.bine80882de880e5d3a7c4804dbd4d6a3844e0239f1e1cf0bc5d724425b2d2743b6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14E2D | 11168 bytes |
font_02_sfnt_off000167df.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x167DF | 16792 bytes |
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