MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many of which appear to be hosted on compromised WordPress installations or disposable domains, suggesting a link farm used for phishing or malware distribution. No scripts were extracted from this sample, but the presence of multiple PDF-specific heuristics related to URI and link farms strongly suggests a phishing or redirection attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.9978
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://medvor.ru/uplcv?utm_term=pegem+2020+kpss+co%C4%9Frafya+soru+bankas%C4%B1+pdf
- https://zlato-eu.cz/upload/files/wibovitad.pdf
- http://anaminfo.com/attachfile/file/63608505406.pdf
- https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/160716b981c566---79504242362.pdf
- http://www.marcelasemper.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608641f66d986---66163739561.pdf
- https://ginniglobal.com/uploads/file/gojag.pdf
- http://birnagarcollege.in/userfiles/file/futozusofup.pdf
- http://saopauloairporttransfers.com/ckfinder/userfiles/files/numegagapikidafuko.pdf
- https://premiumvipbusiness.com/wp-content/plugins/super-forms/uploads/php/files/eba19f2d0e00c5f258f96fc360d7566c/venanogexibopunipinu.pdf
- https://homini.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160862053af2e3---83302949629.pdf
- http://dokumsuzgec.com/userfiles/files/95546055498.pdf
- https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/feb7385ba6c068e19a9df29495fae903/53993852642.pdf
- http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160f063b1c65ac---85098223003.pdf
- http://forti.in/userfiles/file/60491524498.pdf
- http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160a95f5b000fc---60318081741.pdf
- http://cuahuyhoang.com/media/ftp/file/75296215685.pdf
- http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e1b0ad7484---16632899035.pdf
- https://relans-nn.ru/images/docs/file/41477162792.pdf
- http://dxqzx.com/ckfinder/userfiles/files/20210802_111916.pdf
- http://xn--80age2amlc.xn--80adxhks/pics/images/file/54840363528.pdf
- http://accessprecision.com/userfiles/file/vidifij.pdf
- http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f6edf07628c---13446266082.pdf
- https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/vgaos7i00uum71j8ns7mvib37i/mudagipiz.pdf
- http://3qlohas.com/CKEdit/upload/files/tafarazogem.pdf
- http://hevolta.com/upload/file/pumiwobepaje.pdf
- http://zit-tech.com/userfiles/files/vajadilovubifelivuna.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_off0000de5f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE5F | 16792 bytes |
font_01_sfnt_off0000f676.bin47221a985a5a86a96733cf620d69d736c085019d1171f39afb4c1d44b7b2ecef |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF676 | 11696 bytes |
font_02_sfnt_off00011183.bin214a35d6a189c36c92184f273ff7e1ec5278f632bf41cbf7778c5393b3ce0e36 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11183 | 18456 bytes |
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