MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by ClamAV as a phishing trojan and a machine learning classifier indicated a high probability of maliciousness. It contains numerous embedded URLs pointing to compromised WordPress sites and disposable hosting domains, suggesting a link farm designed to redirect users to malicious content. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the overall structure and URL distribution strongly indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9943
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 https://nomylo.ru/uplcv?utm_term=class+10+maths+chapter+1+rs+aggarwal+solutions PDF link annotation
- http://notarbrazda.cz/userfiles/file/43752205931.pdfIn PDF document text
- http://aplus.to/userfiles/file/joguv.pdfIn PDF document text
- http://kystop.com/wp-content/plugins/super-forms/uploads/php/files/83rp19esk9d9ql16kjfo0se422/zasirevimaxobekulopepeju.pdfIn PDF document text
- http://hopkinshigh62.com/clients/7/77/7764523e397120ad9b09b1da26998858/File/87003035977.pdfIn PDF document text
- https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/dffesgqf4ok97eb5b2s285kovq/jibonukunu.pdfIn PDF document text
- http://kapelski.pl/userfiles/file/65928720003.pdfIn PDF document text
- https://aterhesseg.com/up_image/file/90400524374.pdfIn PDF document text
- http://www.expo-hotel.com/english/wp-content/plugins/formcraft/file-upload/server/content/files/160c7149ee1826---30579303366.pdfIn PDF document text
- http://mmckno2010.zkosuchdol.info/files/lopimavamuresemeg.pdfIn PDF document text
- http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090664ca2986---5689089735.pdfIn PDF document text
- https://oknoplus-omsk.ru/wp-content/plugins/super-forms/uploads/php/files/a50dc4d83d1105c0a664e184d8a20b8a/82982691442.pdfIn PDF document text
- http://midiabyz.com/wp-content/plugins/super-forms/uploads/php/files/c069e175db9eb00ce3dcf994ddbc5600/sijepuvekusuxez.pdfIn PDF document text
- https://southtours.com/wp-content/plugins/super-forms/uploads/php/files/05cuo82c4mvrlb5gpvcu8d2mvc/5327512872.pdfIn PDF document text
- https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160732d46a6264---89407766073.pdfIn PDF document text
- https://zivotzaokny.eu/res/file/fikutosodagasitovag.pdfIn PDF document text
- http://kfbi.ru/content/file/37472772478.pdfIn PDF document text
- http://frigotechreina.com/userfiles/files/30804705940.pdfIn PDF document text
- https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/160ba6e062572f---xobefimipu.pdfIn PDF document text
- https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160814c9e05a0b---29256623775.pdfIn PDF document text
- http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d56275b34bd---89379113310.pdfIn PDF document text
- http://maihome.hu/admin1/file/64647411924.pdfIn PDF document text
- http://terapeutickemasaze.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1607f608cd3926---93840395202.pdfIn PDF document text
- http://vladjurnalist.ru/archive/file/81675957203.pdfIn PDF document text
- 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_off000142fc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x142FC | 17736 bytes |
SHA-256: ffdbdd3d9e226008baf6ddb81e0f7c5e02c86e9a9c3475ff066eded9790abcb7 |
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font_01_sfnt_off000171de.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x171DE | 11212 bytes |
SHA-256: 7941d8e481dc5aceadf9ce8cc315e6be8ecda79f8300966b15dd5af572df499d |
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font_02_sfnt_off00018c0e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x18C0E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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