MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The numerous embedded URLs point to compromised WordPress sites and other disposable hosting, suggesting a link farm designed to redirect users to malicious content. The document body is heavily obfuscated and unreadable, but the presence of external URIs and the link farm heuristic indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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://crysiq.ru/uplcv?utm_term=jee+main+previous+year+paper+2020
- http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160909ab237927---98281031481.pdf
- http://studiolegalebisantis.it/userfiles/files/xagixugagobisusigiluwedor.pdf
- https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/7q2aek58ttlsuj2hujtbti9lsq/29547943540.pdf
- http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b552b151a0---fiwataribipomebepeve.pdf
- https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/74600d627e73d1d911c34e1a3eb41b8b/muwilobo.pdf
- https://creteservices.com/FCKeditor/userimages/file/temuzekelu.pdf
- http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fa460e8cfe---45801571071.pdf
- http://www.sudaff.com/pics/file/37310805325.pdf
- https://cs168.tw/upfiles/editor/files/6058793747.pdf
- https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/44v8oprf85oiskqvj7m65dsire/guzosamoxuma.pdf
- https://ntc-container.com/upload/files/derapulaxuj.pdf
- https://atl-50.com/files/file/1993132671.pdf
- https://bdblue.com/ckfinder/userfiles/files/fogapozugo.pdf
- http://riskhedgetech.com/uploaded/file/89861458460e0571b750f7.pdf
- https://zzarosiscarampola.it/file/gomekiteragekeke.pdf
- http://expresskaliski.info/file/57179556737.pdf
- https://yar-net.ru/userfiles/file/derapadoso.pdf
- http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd60c36a17c---86572893636.pdf
- http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4f6a869ee7---sawekozijexaloligojuvup.pdf
- http://kstarsmall.net/userfiles/file///dobakivoxekep.pdf
- https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/7ebe77edff8f1046829352613fce98d2/95370629978.pdf
- https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/854c8e88c854082e02b15855d283fb35/46402180568.pdf
- https://juhaszautovill.hu/userfiles/file/56424196244.pdf
- http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a11bca85bd5---61555836252.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_off0000edd8.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEDD8 | 16792 bytes |
font_01_sfnt_off000105ea.bin4ecd3ad8a6cf44b619b79fba6fbc2b965c412d755c45ab0cd2ed690e97aeb993 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x105EA | 16804 bytes |
font_02_sfnt_off000131dc.bina5a5616a7b35bc18cd8ed0f3a774a076fada397830ceabc244ae39472e089594 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x131DC | 10780 bytes |
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