MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The sample is a PDF document that contains numerous embedded URLs pointing to compromised websites and disposable hosting, suggesting a link farm for phishing or malware distribution. Heuristics indicate it is a callback phishing lure, consistent with a malicious PDF designed to trick users into downloading further malicious content or revealing sensitive information. ClamAV detection confirms its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 7
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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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 https://krisoc.ru/uplcv?utm_term=uganda+passport+forms+pdf
- https://www.pal-kont.hu/wp-content/plugins/super-forms/uploads/php/files/8f4c788c340ec4d919f69829d0fc86e9/xiwididopejasix.pdf
- https://accuratesearch.com/userfiles/file/sufesuril.pdf
- http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160752a39db8d8---lozotuluvujiwa.pdf
- http://drwatsonsr.com/clients/2/2b/2b9a0cf27321ceab3a47fbd10bf94d34/File/13989412186.pdf
- http://diencohoanghuy.com/media/ftp/file/65020057059.pdf
- https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/3hk66ssv97750duv1su9mr3v33/bisosabimokusinefegezol.pdf
- http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/1609a8c2ed79e8---dedejaguzajivodin.pdf
- http://boulderdivorcelaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084fb8ee57d7---66016082297.pdf
- https://seataclighting.com/wp-content/plugins/super-forms/uploads/php/files/0b878851c15c0896a25ffa5af6117820/kasubuparot.pdf
- https://www.hamburgeriaagricola.com/wp-content/plugins/super-forms/uploads/php/files/udk28q40253l2dthcktnuqv1m8/98471360235.pdf
- https://lion-trading.co.uk/wp-content/plugins/super-forms/uploads/php/files/4raajjhnv8lfj5v7q3bf746ppi/42860071508.pdf
- http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a688dc7caa0---62413126939.pdf
- http://lifemartrealestateconnect.com/wp-content/plugins/super-forms/uploads/php/files/80u25or3qs014sj8rru3fdag71/dobotolete.pdf
- https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/3iu95se1goec4mhlcr2ucbdc5b/76451420947.pdf
- http://akcjonariusz.com/UserFiles/file/23418287110.pdf
- https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/7f4746bb20d0f04decbfc920c1251eb8/22902620913.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f575.bin8a67b761844f98402578d181a7059a49a8f03eeabf9e20caddf9cd6ec52dc404 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF575 | 5320 bytes |
font_01_sfnt_off0001077a.bin02fc8b52dfe687dc5878da006195d264d26d5968ace58941ed2bb8cc0b33f99e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1077A | 11720 bytes |
font_02_sfnt_off00012f98.bin3f83bbfb2e03141a9083badfb1da6e2b1773f9aa6b1ed8f30fc2d392a5ee3553 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12F98 | 16140 bytes |
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