MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a link farm with numerous URLs pointing to other PDF files, many hosted on what appear to be compromised CMS upload directories. This suggests a tactic to distribute malicious content or engage in SEO poisoning. The ML classifier and ClamAV detection strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.6361
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://www.evisiontiendaonline.com/ckfinder/userfiles/files/fizetajofep.pdf In PDF document text
- http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/1608b59f5f3955---54416797211.pdfIn PDF document text
- http://zhongguohuachun.com/d/files/68263918812.pdfIn PDF document text
- https://aadhaarretail.com/administrator/imagetemp/file/59852632590.pdfIn PDF document text
- http://djapm.com/userfiles/file/73077763423.pdfIn PDF document text
- http://savvyais.com/userfiles/file/fomigalunixixozasawa.pdfIn PDF document text
- http://studiofantino.it/userfiles/files/jamujarijulomisawa.pdfIn PDF document text
- https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/160cabf26cd1b5---peluvogasimowes.pdfIn PDF document text
- https://skazkavdom.com/wp-content/plugins/super-forms/uploads/php/files/4c7daea0990df55cfd2bbcee5518374b/63833339811.pdfIn PDF document text
- http://greece-ex.com/images/blog//file/vebirupozuxaterexeladufu.pdfIn PDF document text
- https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609dd55cdf4f3---31573964045.pdfIn PDF document text
- https://www.idahomedia.com/wp-content/plugins/super-forms/uploads/php/files/fd8aeb1212936b745b700aba14122d1f/jerufemojaxejigezunod.pdfIn PDF document text
- http://nessium.net/userfiles/file/fofanurasetamul.pdfIn PDF document text
- https://salvatoredivilio.it/userfiles/file/wokexawudupazominozi.pdfIn PDF document text
- http://barbusci.it/maisUserFile/file/jisowux.pdfIn PDF document text
- http://accronline.com/userfiles/file/futomapij.pdfIn PDF document text
- http://bbbswalkforkids.com/clients/c/cf/cf8d0549bdc9bbdffca8bc0db9808b96/File/bulabenifowerazevixo.pdfIn PDF document text
- http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/1606fa481514a3---66774132537.pdfIn PDF document text
- http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/1606c86fcd1a03---gagefi.pdfIn PDF document text
- http://maility.pl/_ADRESuserfiles/file/33263342818.pdfIn PDF document text
- http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abf53c72145---6076051951.pdfIn PDF document text
- https://atlanthealth.com/wp-content/plugins/super-forms/uploads/php/files/b25112a400cf543a48f623037db70ad2/bagunowenijuwadunul.pdfIn PDF document text
- https://frontiersneurophotonics.org/wp-content/plugins/formcraft/file-upload/server/content/files/1/160a058144d8e0---gedabuzivo.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=embed+code+in+pdfPDF 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_off0000c691.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC691 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000dea8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDEA8 | 10328 bytes |
SHA-256: 6260fe7f55f8f706d7b46064e8a8bcf760919e3704827ef5577cd09e790d946e |
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font_02_sfnt_off0000f596.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF596 | 17044 bytes |
SHA-256: c468fa0a3ea399bdaec9ef08d3f01193dc06a3f13aeea86d4bdfcdddd616210e |
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