MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm. It contains numerous embedded URLs pointing to external sites, some of which are hosted on compromised WordPress installations or disposable domains, suggesting a phishing or malware distribution scheme. The presence of multiple distinct hosts and the use of UTM parameters in some URLs further support this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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 https://allytemp.ru/uplcv?utm_term=black+sabbath+can+you+help+me
- http://changwontour.kr/FileData/ckfinder/files/20210908_069F8DC244AD4A09.pdf
- https://razredna-nastava.net/files/tawik.pdf
- http://asqcert.net/files/files/86237033976.pdf
- https://chptravel.ir/data/file/58032067003.pdf
- http://ip-golubev.ru/ckfinder/userfiles/files/65333104246.pdf
- http://www.asiacoservice.com/file/files/29860233546.pdf
- http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/16137f06a28b50---22757497971.pdf
- https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136103f8dd27---87959949465.pdf
- https://oriontradecom.com/ckfinder/userfiles/files/79307729710.pdf
- http://willtorock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a88a25cd67---51011919439.pdf
- http://savvyais.com/userfiles/file/49260471688.pdf
- http://cinstech-inspect-survey.com/fckeditor_userfiles/file/minetuniwevedileneno.pdf
- http://maszyny.pl/userfiles/file/tiwurofunukarituroxolowu.pdf
- http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133cf28a6418---gowunoneb.pdf
- https://finliz.lt/i/File/44179074211.pdf
- http://ccsilver.kr/files/fckeditor/file/17965052826135b39aa8e23.pdf
- https://mimpishio2bet.com/contents/files/33456457537.pdf
- http://trevelsi.ru/ckfinder/userfiles/files/rikowinukotexo.pdf
- http://mashhadgardi724.ir/basefile/mashhadgardi724/files/70338243516.pdf
- https://vkgnassociates.com/dayafter/uploadimages/newsimages/file/93607613114.pdf
- https://eseninternational.com/uploads/files/kawerujibel.pdf
- https://ikansambel.com/contents/files/fufijimipirod.pdf
- http://www.c-l-r-p.com/admin/ckfinder/userfiles/files/timiposamibawi.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000d89b.bin9c09c88ae8c16bff84111354316359d021997fb4aad4f8972c10b81994a3a1b4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD89B | 16352 bytes |
font_01_sfnt_off0000eeff.binf728bfa3323333fd7490ecf0cc32fddcae125852fc717e52f86cdb236a897e18 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEEFF | 19920 bytes |
font_02_sfnt_off000123a6.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x123A6 | 16792 bytes |
font_03_sfnt_off00013bbd.binb737e83f1b5376c02b5ce5f572dc9be7906f9f0a56ab807d12b61093a2b77d9a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13BBD | 10948 bytes |
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