MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links, many pointing to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The document body is heavily obfuscated and unreadable, preventing a deeper analysis of its specific lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9968
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://cyklo-sport-servis.cz/UserFiles/File/vakejamogagumulusekiname.pdf In PDF document text
- http://vino-charlie.cz/userfiles/file/latarelodas.pdfIn PDF document text
- https://yp05.com/_UploadFile/Images/file/bozabamusi.pdfIn PDF document text
- https://beldapin.com/calisma2/files/uploads/24370498289.pdfIn PDF document text
- https://cvenhancer.com/wp-content/plugins/super-forms/uploads/php/files/9882813dd5e85258146de4ba27e58772/98059263175.pdfIn PDF document text
- http://valdhans.cz/userfiles/file/tojedeje.pdfIn PDF document text
- https://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131663d5e959---6602228700.pdfIn PDF document text
- https://hensuyenpqa.traigiongthuha.com/ckfinder/userfiles/files/12830146571.pdfIn PDF document text
- http://vitalbafitnessclub.eu/userfiles/files/xanavojudibakawezipima.pdfIn PDF document text
- http://khachsansapa.vn/webroot/img/files/34254573592.pdfIn PDF document text
- https://ivanda-commerce.hr/userfiles/file/59641828915.pdfIn PDF document text
- http://olsztyntransportmedyczny.pl/userfiles/file/66428418765.pdfIn PDF document text
- http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b105245836---97337748636.pdfIn PDF document text
- https://zenithoverseas.com/assets/userfiles/files/1794716612.pdfIn PDF document text
- https://northcoteplaza.com/userfiles/file/20610836556.pdfIn PDF document text
- https://asiarsolutions.com/userfiles/file/tebisuviberogok.pdfIn PDF document text
- http://www.detskaoptika.cz/ckfinder/userfiles/files/3013522964.pdfIn PDF document text
- http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/a2f70024a64fc53ded2a53991e582c00/vudov.pdfIn PDF document text
- https://bdblue.com/ckfinder/userfiles/files/texanopiredorasotuxeku.pdfIn PDF document text
- http://matrix-corporation.com/upfiles/editor/files/lopazasozunux.pdfIn PDF document text
- http://arucax.am/user_images/file/godulinakujezenuduse.pdfIn PDF document text
- http://chafewyuok.handysociality.com/upload/files/zubuneteni.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=how+to+send+pictures+from+android+to+macbookPDF 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_off0000d861.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD861 | 11144 bytes |
SHA-256: b0fd34886f2f338155a90ac2b92d45c75cf69cf3d11c8f2624ed799b93e7a079 |
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font_01_sfnt_off0000f239.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF239 | 18148 bytes |
SHA-256: 178be21e4cdf2f04df7438e190aa6f4fedd487f2bb122677f34571fcbd9049e7 |
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font_02_sfnt_off00012150.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12150 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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