MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Analysis reveals it functions as a link farm, containing numerous URLs pointing to compromised WordPress sites and disposable domains. These links are likely intended to redirect users to malicious content or phishing pages.
Machine Learning
- Nyx PDF Classifier malicious score 0.9917
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://gibisch.biz/files/files/15706279029.pdf In PDF document text
- https://kurashi-kyoiku.com/cms/dat/upimg/file/12049272237.pdfIn PDF document text
- https://grupo-kayros.com/userfiles/file/wexogiresukugi.pdfIn PDF document text
- https://brod-plovdiv.com/images/wabosupodufugesubeni.pdfIn PDF document text
- http://a-range.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160ac90cbdbbd5---87108437288.pdfIn PDF document text
- https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/02b4b5e5be98d2c9ee4a5a2ee451109e/lozusoxebuzagaxupugebi.pdfIn PDF document text
- http://bestforfishing.com/wp-content/plugins/super-forms/uploads/php/files/82c59cc3d99f7e3ec827a2d2e5ded359/89537796126.pdfIn PDF document text
- https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/8c40a81765f0e75466528ded357f4805/duvufus.pdfIn PDF document text
- http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/160785cb16e2af---bewipodozijulav.pdfIn PDF document text
- http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fb05b4cb802---96887158921.pdfIn PDF document text
- https://www.albispanaderia.com/wp-content/plugins/super-forms/uploads/php/files/c3e60e014f6a01e7e3b35dae1cebc370/zokobuvivu.pdfIn PDF document text
- http://testplanet.nl/uploads/files/xebatuka.pdfIn PDF document text
- https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/3ba00ef0efc3e93b8e52ccb4b250453f/figedapupesexix.pdfIn PDF document text
- http://elmiraclassiccountry.com/wp-content/plugins/super-forms/uploads/php/files/k18r4vl4o69usscjtrd1kr38b0/tavevopezazofe.pdfIn PDF document text
- http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af7faf262af---kexogoxapibalu.pdfIn PDF document text
- http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3fa5431366---denumu.pdfIn PDF document text
- http://booklandbooks.com/userfiles/file/83613899370.pdfIn PDF document text
- https://tourgardan.com/basefile/tourgardancom/files/vidurufileviwune.pdfIn PDF document text
- https://amitadevnani.com/userfiles/file/litos.pdfIn PDF document text
- https://bestwaynepaltrek.com/ckfinder/userfiles/files/83170044306.pdfIn PDF document text
- http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6a9e47b679---60129525011.pdfIn PDF document text
- https://noddy.nu/images/file/megakuvumofojufuxuduzuzu.pdfIn PDF document text
- http://steclotildehorton.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16071db1e2fdfd---4542342641.pdfIn PDF document text
- https://dacola.com/upload/files/38821879229.pdfIn PDF document text
- http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/160bc91bc07d67---23297186385.pdfIn PDF document text
- https://telewebmarketing.com/FCKeditor/file/zevizesokiwopasabas.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=my+dog+gets+tired+of+his+foodPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- 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_off0000d1db.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD1DB | 10428 bytes |
SHA-256: 1df4e029126199d20a33a3bfc215c392c849739357c535fb0559239818dd6b84 |
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font_01_sfnt_off0000e96a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE96A | 18032 bytes |
SHA-256: ab91a4a79a03a291d14e5386e86e56e119396c26d9fc39623e873d3176833ac0 |
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font_02_sfnt_off000117de.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x117DE | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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