MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external links, many pointing to compromised CMS upload directories, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to malicious sites or download further payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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://catamma.ru/uplcv?utm_term=ell+students+in+the+classroom
- https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/no7t54macshhsrdoq2rke6tola/zurepajajametavasevipo.pdf
- http://whatdwellswithin.com/file/32392712768.pdf
- http://rld-carbon.ru/file/64350668048.pdf
- http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077cac65e310---bofuponi.pdf
- https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607142d2527fe---tavudiwosonovebir.pdf
- http://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16098c37af0ce7---kesawez.pdf
- http://tipkeo.com/js/ckfinder/userfiles/files/fujaruxo.pdf
- http://romanakladatelstvi.cz/userfiles/file/gupomedorewunuzav.pdf
- http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/7sn68v1i4msqkc34ka3nsrcui0/gezebamudugekoresuzalo.pdf
- https://smartcirclegroup.com/userfiles/file/kipagaxawurofuzigetog.pdf
- http://liebherr-tr.com/userfiles/file/pimamikibutakodogamajuwe.pdf
- http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607c1253155be---tolalutifujapuwezite.pdf
- https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/bsefg1djecor7vbvbh0vqmeiu8/wovizobijuna.pdf
- https://aglogistics-bo.net/userfiles/file/badiravejevamumaxo.pdf
- http://mwflower.com/upimagesfile///runujaborig.pdf
- http://jhferry.com/data/fckeditor/file///vogamo.pdf
- https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160949021d757b---38237798304.pdf
- http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608c63afcf5e9---pujitulabolise.pdf
- http://sequirk.ie/userfiles/file/xupemabodoxiluxevobakido.pdf
- http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160aadba4c82b0---26195209986.pdf
- https://xn--i1aam8cb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/a361dfe68332c5fbe2ca76f7b6c0ecd8/nasaginasitagod.pdf
- https://purebodycare.courses/wp-content/plugins/super-forms/uploads/php/files/ga2cvtlhvf08qsnc1be3c4rvrg/92061619062.pdf
- https://dipinkrishna.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096ca98393ee---toxegudopupafereb.pdf
- https://abandassociates.com/ckfinder/userfiles/files/jazedakinezuwavavuxogasuw.pdf
- https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/539bb59cab599a47842f4ebd76047b44/povavoso.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_off0000eb7a.bin8e2c4926ea5026dbfcb935e353d765fb746e24263aba18127ae169da3073db57 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEB7A | 10716 bytes |
font_01_sfnt_off000103db.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x103DB | 16792 bytes |
font_02_sfnt_off00011bed.bin42316bbe7c71840e20da768b61f10a545151ef2679451471e32d61a6ceea64d2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11BED | 16680 bytes |
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