MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to multiple PDF files hosted on compromised websites. This technique is often used for SEO poisoning or to distribute phishing content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
Heuristics 6
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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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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://computerdoki.hu/user/file/38834320793.pdf
- https://www.auditek.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160bc665c913f2---34809696418.pdf
- https://aydin-elektrik.com/resimler/files/10061373025.pdf
- https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/d0c0730c75a98810e36fde34892cb9db/6764164242.pdf
- http://thehawthornnyc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1140364268---5664902714.pdf
- http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607765ee22422---repenogomazorokupuso.pdf
- https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/410897bbdd9b5fb365e67cec7973a691/lenabofonovigi.pdf
- https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/6d62c2ff32ce895dfad0d3a4e14a9def/58710094859.pdf
- https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7dc5c5453b---32413108335.pdf
- http://artechq8.com/beta/uploads/files/13948633030.pdf
- https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/77jq1rkub75a1uomvpbmf2egag/1812068206.pdf
- https://an-professional.ru/img/files/file/vagupedutapikudujitinax.pdf
- https://lion-trading.co.uk/wp-content/plugins/super-forms/uploads/php/files/kgpppv78n1hh52b7h0fct0oqvs/62936114084.pdf
- http://salon-urody-bellis.pl/images/file/wedinesamubiwujojir.pdf
- https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16091ae84a90bf---kunatoviraderezowor.pdf
- http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/1607889626ad62---58031366981.pdf
- https://completecollegestrategies.com/wp-content/plugins/super-forms/uploads/php/files/bab4ff4363abc537479ce2e8a467716e/ginamuzanivimitijot.pdf
- http://ildungrice.com/fileupload/fckeditor/file/jareluladesexadeferagavo.pdf
- http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1606f0c368e70a---ruzojo.pdf
- http://foto-preiss.at/upload_files/files/3789535754.pdf
- http://luingpyrex.cz/foto/Image/file/69094676081.pdf
- http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cd07c0743a---fotivovejeve.pdf
- http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1608478265bfa7---mekaxuwafoditak.pdf
- http://lotuscourtpune.com/wp-content/plugins/super-forms/uploads/php/files/8kmqcf6ut7ro231h2juunu5kj0/80630434994.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=a+list+of+singular+and+plural+nouns
- 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_off00010548.bin0e16bec51f1c9706691167e8476286eac7297778a41abe29f34b1ddaa5b037a8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10548 | 16860 bytes |
font_01_sfnt_off0001315e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1315E | 16792 bytes |
font_02_sfnt_off00014975.bin5d2ccd13dc61993c0221bbde4b856a0f975ba9c8e1fd437321ed2edb2127ca9a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14975 | 10624 bytes |
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