MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ClamAV and an ML classifier, with heuristics indicating it functions as a link farm. Several URLs point to compromised CMS uploads, suggesting an attempt to host or distribute malicious content. The presence of external URIs and link farms points towards a phishing or redirection scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9846
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 http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613c404d0e911---72885376701.pdf
- http://www.mab-solutions.fr/upload/file/vorobekujelaroramumovo.pdf
- http://naszemotyle.natura2000.pl/imgturysta/files/mabunizowuxat.pdf
- http://zgkimsteszew.pl/img/upload/files/7113909854.pdf
- http://nuocmambason.com/upload/fckimagesfile/d7227e23d42d083cb12fffdc77168f47.pdf
- http://kodemari.info/data/files/zuvofa.pdf
- https://piauiaqui.com/ckfinder/files/lezisev.pdf
- https://selapro.com.au/application/third_party/ckfinder/userfiles/files/93819405898.pdf
- http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/161363dd19c38d---30527759628.pdf
- http://canyonmeadows.org/userimages/vexutinadalenad.pdf
- http://www.valathors.com/ckfinder/userfiles/files/mipifu.pdf
- http://macautemple.com/userfiles/file/tewuwerixoxidapelawa.pdf
- http://le-lemniscus-incandescent.fr/ckeditor/upload/files/57663847590.pdf
- http://xaydunglenguyen.vn/upload/files/52ac8f.pdf
- https://hotnews.md/upload/userfiles/files/rimupebodusilufizu.pdf
- http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/161386bd218b53---32656999766.pdf
- http://hodoan.net/userfiles/file/saxulo.pdf
- https://euronuts2009.ge/files/files/15873943148.pdf
- http://nujhimachal.in/img/uploads/files/91117450401.pdf
- http://ptairsupply.com/userfiles/file/23773203846.pdf
- https://tiklatakip.com/calisma2/files/uploads/neposidivabumib.pdf
- http://qualityspices.in/ckuploads/files/31165497146.pdf
- http://x-mobio.com/upload/files/35821709106.pdf
- https://ideylia.fr/uploads/file/fixed.pdf
- http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138e94b6abd3---nijedejorodaledopeg.pdf
- http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f35bd47717---43870597167.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=explanation+text+features+ks2
- 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_off0000d7be.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD7BE | 16792 bytes |
font_01_sfnt_off0000efd5.bin41db51e8fccf77f9bb2c8a3bea6a9edb1cf25f3f06a2ee7af531afbc04ab8354 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEFD5 | 10748 bytes |
font_02_sfnt_off000108bf.bine618ef1a1d20ff165ab26ad4a36b33d90717ddcc257cf12cf67cde38230aaaee |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x108BF | 17540 bytes |
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