MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and a machine learning classifier. The 'SE_CLICKFIX' heuristic indicates a social engineering attack that instructs the user to press Win+R or paste a command into a terminal, likely to bypass macro restrictions and execute a secondary payload. Multiple URLs were found pointing to compromised WordPress sites and other domains, suggesting a link farm used for hosting malicious content or redirecting users.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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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ClickFix social engineering attack high SE_CLICKFIXDocument instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
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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://crysiq.ru/uplcv?utm_term=no+screenshot+available
- http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16142a781dfe5f---xibesuxamubaxa.pdf
- https://gosselindesign.com/images/from_fckeditor/fichiers/takonigikejuziribopero.pdf
- http://karcannakliyat.com/userfiles/file/7227798212.pdf
- http://seattlebestteriyaki.com/uploads/files/34307237199.pdf
- https://newsale.linyn.mobi/upload/ckeditor/pages/files/bagowiwasalewikinebuvat.pdf
- http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16134f7b3cdad5---86415886360.pdf
- https://ms1oke.com/contents/files/13659777164.pdf
- http://lblussana.it/images/file/69730159974.pdf
- http://xn--3e0b556bhrbowi6undva.com/ckupload/files/21351804477.pdf
- http://veszpremlizards.hu/_user/file/96075181059.pdf
- http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613c02b6ce126---pesotavobuzusuwenim.pdf
- http://tai-yang.tw/taiyang/upload/file/fusenibe.pdf
- http://dblbtech.com/userfiles/file/nupesotomasexesa.pdf
- http://blccy.com/userfiles/files/26066104061.pdf
- http://krakow4you.pl/krakow/files/40197727478.pdf
- https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613af913b54fe---gokoxazuduriwitotugovonuw.pdf
- http://js-space.de/userfiles/file/xafor.pdf
- http://donghobaoan.com/uploads/files/lamipenojija.pdf
- http://goang-hann.com/uploads/files/202109042029382504.pdf
- http://klaaswester.nl/img/file/fofama.pdf
- https://kaisar168.com/contents/files/46217681231.pdf
- https://giriconsultancy.com/content_files/files/volekixoji.pdf
- http://delfosventures.com/userfiles/files/nozemebabiz.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_off0000d767.bin7ac56292b2976b4fe5a64a5523126637b40f202da8131931294be8b9bfdc54da |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD767 | 17720 bytes |
font_01_sfnt_off0001053b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1053B | 16792 bytes |
font_02_sfnt_off00011d52.binb9340fb13e05547f8f06556d7179c4b17ff228eca9d754c2f42dbdce14f74aa2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11D52 | 10512 bytes |
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