MALICIOUS
156
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 an ML classifier, indicating a high likelihood of malicious intent. The file functions as a link farm, containing numerous URLs that point to compromised websites or disposable hosting, suggesting a phishing or malware distribution scheme. The presence of external URI heuristics and link farm indicators further supports this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9917
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 http://bassbasement.org/userfiles/file/80701220425.pdf
- https://werbemittelag.chupload/file/fopilixadafijo.pdf
- https://www.opdrrustukalac.com/wp-content/plugins/formcraft/file-upload/server/content/files/16114336d26244---belajaxexepa.pdf
- http://elisa5888.com/shopadmin/upload/files/92535907771.pdf
- https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/106636f9c9c8680090277bdaabc3eae6/21277031190.pdf
- https://grupo-bahia-real-estate.com/ckfinder/userfiles/files/8017644592.pdf
- http://dabaizhongxue.com/upload_fck/file/2021-6-8/20210608233757576842.pdf
- http://rebeccafantarchitetto.it/userfiles/files/fizepewowu.pdf
- https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097ee803a374---fonokab.pdf
- http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160739f28c19a7---lawabigirava.pdf
- https://avflash.nl/upload/files/55557669085.pdf
- http://basyapiemlak.com/yukleme_klasoru/userfiles/file/77185938253.pdf
- http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/415569fc155a3f95abf547fe544a84e6/lasunozadirimugutufisolu.pdf
- http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075e02f8e7bd---53477471706.pdf
- http://unseretochter.com/images/file/71743832409.pdf
- https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/6c2460df7116f67c1be13861da198486/56228918827.pdf
- https://gonguyenkhoi.vn/upload/files/67952713015.pdf
- http://angarakshaksecurity.com/userfiles/file/tilukosisap.pdf
- https://www.couleurs-et-jardin.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160ccc39ce4d21---nefuwizurelixaritowawe.pdf
- https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/11982cd44ab8fb30419e575954185252/33141877263.pdf
- https://kasihpaham.com/contents//files/gorijexafozute.pdf
- http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/4b8b7f977dc7138f1887496eaca15b60/8314550790.pdf
- https://www.zochrot.org/ckfinder/userfiles/files/ganabekawugowuropu.pdf
- http://www.segurosfacility.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609b22eb2bf79---remulubanoredoledel.pdf
- http://111-orte.de/testarea/cwsCMSlight/media/files/58956006726.pdf
- http://szpk.hu/_user/file/darasid.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=adding+and+subtracting+unlike+fractions+worksheets+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_off0000d50b.bin76893ec033ee8009ab7c8a6fb29e0185ca5281ba113101b261cf1372d9004b0a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD50B | 16604 bytes |
font_01_sfnt_off0001007e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1007E | 16792 bytes |
font_02_sfnt_off00011895.bin44618b629b4b84c2f6fe6599ac68b86be479dbc9fb312661957483fd59a582f4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11895 | 11300 bytes |
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