MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple potentially compromised or disposable hosting sites. The presence of numerous unknown URLs, including one pointing to a compromised CMS upload, strongly suggests an attempt to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
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://cpk.by/ckfinder/userfiles/files/86257229733.pdf In PDF document text
- http://redeyeldn.com/userfiles/file/12120417655.pdfIn PDF document text
- http://topflexsports.com/uploads/diziwolonufiz.pdfIn PDF document text
- http://portalpr-b2b.es/img/user//file/_0966810001632307753.pdfIn PDF document text
- http://gardena.crazyrockinsushi.com/uploads/files/dinez.pdfIn PDF document text
- https://livewireeventz.com/userfiles/file/gamunavutam.pdfIn PDF document text
- https://infosantiere.ro/userfiles/file/getarapumexiberexutipulu.pdfIn PDF document text
- http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/161381163cfffc---zujobepupazupevox.pdfIn PDF document text
- http://keramann.ru/uploads/files/zibobisalopevegujomuwizo.pdfIn PDF document text
- https://dascalita.ro/app/webroot/files/userfiles/files/tatapopumedatapuwalikejev.pdfIn PDF document text
- http://chapraptti.org/userfiles/file/vebonuvafod.pdfIn PDF document text
- http://squash-fitness.cz/userfiles/file/64341547131.pdfIn PDF document text
- https://wroclawmodelshow.pl/ckfinder/userfiles/files/73099983957.pdfIn PDF document text
- http://xn--j1aii.su/userfiles/file/serelukamu.pdfIn PDF document text
- http://ilkjv.com/Images/Media/files/nijegigogixupimo.pdfIn PDF document text
- https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/cb8638f5418402f4f4f512fe3dcefcd0/22719918490.pdfIn PDF document text
- https://bold-iot.com/uploads/files/202109070202093691.pdfIn PDF document text
- https://ingatlanfelugyelet.hu/uploads/file/kudirevevo.pdfIn PDF document text
- https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/0cb168e2b0ea84d412a80c9d4e3bc912/25965183136.pdfIn PDF document text
- http://saraiaser.nl/userfiles/file/xirujirajigogokapovi.pdfIn PDF document text
- http://sugarfree-gelato.com/upload/file/72603431988.pdfIn PDF document text
- http://changrung.com/ckfinder/userfiles/files/sitokerobafunagovibulevu.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=online+mooc+platformsPDF 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_off0000de21.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE21 | 18560 bytes |
SHA-256: 9071fd3be03201606b76449357bd010677720b90126eccda008765b537e3d32c |
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font_01_sfnt_off00010eba.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10EBA | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000126d1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x126D1 | 10668 bytes |
SHA-256: 5a39cf014eb65b12020543bbee3ef183676562e98e8633d2ce71580aafa70af1 |
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