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 ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous URLs pointing to potentially compromised or disposable domains, suggesting a tactic for SEO manipulation or phishing. The PDF structure and embedded links are consistent with techniques used to distribute malicious content or redirect users to harmful sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9573
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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PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILEDThe cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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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://ellissi.org/userfiles/files/32405566551.pdf In PDF document text
- https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/16073b41de47e6---37221290502.pdfIn PDF document text
- http://edu-family72.ru/content/images/uploads/file/rezisuxo.pdfIn PDF document text
- http://bekescsaba.varosom.hu/userfiles/files/nugunudebikudazudu.pdfIn PDF document text
- http://slenderclub.cz/ckfinder/userfiles/files/gesepisapawopujuviwevom.pdfIn PDF document text
- https://davebakeragency.com/wp-content/plugins/super-forms/uploads/php/files/87c0c6b24bf28ce902676f831a3f7243/59995281985.pdfIn PDF document text
- https://dm288.rs/slicice/file/33802228373.pdfIn PDF document text
- https://www.mixedclass.com.au/wp-content/plugins/super-forms/uploads/php/files/5aor0snhaokkska2ob86al9g59/44473537302.pdfIn PDF document text
- https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/778e16e37af32b9c32115bd7d1c7cdec/teraxaresewukelos.pdfIn PDF document text
- https://tidurmalam.com/contents//files/kevaxiladazadobovodir.pdfIn PDF document text
- http://www.barbazan-debat.fr/ckfinder/userfiles/files/jebodegokiposikix.pdfIn PDF document text
- https://marigabung.com/contents//files/11590191788.pdfIn PDF document text
- https://sitpchemcieszyn.pl/_sitpchem/file/55699378686.pdfIn PDF document text
- http://bugaboo-buffalo.eu/UserFiles/File/wefejuwulu.pdfIn PDF document text
- http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160701c1232e48---gojexuwim.pdfIn PDF document text
- http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/j1lovv42junllk9qmljt1k0n03/pozubonemurarutotuke.pdfIn PDF document text
- http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f41fbc9b64---robexizagubewajiwojufeje.pdfIn PDF document text
- https://postele-z-masivu.sk/ckfinder/userfiles/files/wulufegowujo.pdfIn PDF document text
- http://lukoilmarine.com/ckfinder/userfiles/files/58292234966.pdfIn PDF document text
- http://aristosaigonhotel.vn/uploads/files/54322976113.pdfIn PDF document text
- https://www.ptlittleflower.org/wp-content/plugins/super-forms/uploads/php/files/84vkia64omb8a6ssicj74dbvua/77715059258.pdfIn PDF document text
- http://lamelove-zakryti.cz/userfiles/file/13577984917.pdfIn PDF document text
- http://ipjanah.ir/wp-content/plugins/super-forms/uploads/php/files/svig3bi3gi169sck2rbu0nqr71/purokusumasusototop.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=back+pain+after+exercisePDF link annotation
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000dc84.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDC84 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f496.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF496 | 16100 bytes |
SHA-256: e33cf422d7935b7befb7432384ea7959a43702ce5523f57e3d85b2045c54dbff |
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font_02_sfnt_off00011e3b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E3B | 10552 bytes |
SHA-256: 84a0b92dc9f03e1dcdc6d249a255e1f1ed235ee0ff6b8177eb8e26aa122083af |
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