MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous links pointing to compromised WordPress sites and disposable domains, indicating a link farm designed to lure users to malicious content. ClamAV detection and ML classification strongly suggest a phishing or malware distribution intent. The document body is heavily obfuscated and unreadable, providing no direct clues to its purpose beyond the embedded URLs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9829
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://krisoc.ru/uplcv?utm_term=how+to+send+a+scanned+document+by+email+on+a+mac PDF link annotation
- http://historia-bfured.hu/userfiles/file/9715546592.pdfIn PDF document text
- http://livestreaming.group/wp-content/plugins/super-forms/uploads/php/files/c7b3j8duuq4ccia4j93kq803mqcupr87/fupalupimetibegalor.pdfIn PDF document text
- https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/eda24e2ecc605c05a6754dd676281d66/87869847027.pdfIn PDF document text
- http://www.elitagida.com.tr/wp-content/plugins/super-forms/uploads/php/files/kk448esqcs1fiqpbe9ib22ntn2/47770571262.pdfIn PDF document text
- https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/2f03ef32563e0107cd251edfbacab9c9/21189245311.pdfIn PDF document text
- http://classicalgardenornaments.com/uplds/file/31264419960.pdfIn PDF document text
- http://coinproject.com/userfiles/image/file/82540985703.pdfIn PDF document text
- https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/4e22139188802f017a6820723e8bf426/badepifodivimoterugenu.pdfIn PDF document text
- http://veraschwemmle.de/fckdata/file/49922856410.pdfIn PDF document text
- https://relleno-acidohialuronico.com/wp-content/plugins/super-forms/uploads/php/files/02790312ccce02f0a80096c70b2beb8f/64728949748.pdfIn PDF document text
- https://cleaner.pl/userfiles/file/30179362076.pdfIn PDF document text
- http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1609888395084c---42088412497.pdfIn PDF document text
- http://jhferry.com/data/fckeditor/file///sudofezo.pdfIn PDF document text
- https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/fdc555a3468eb999e522b47fdf8fc2eb/jasoxopobufariga.pdfIn PDF document text
- http://cnhhgj.com/upfiles/userfiles/file/dunisajetafinekim.pdfIn PDF document text
- https://pjkconstruction.ca/images/file/mixisovakimu.pdfIn PDF document text
- http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a30b19bfea5---rigosagifaxexajoketubixi.pdfIn PDF document text
- http://degeninhotel.ru/admin/ckfinder/userfiles/files/getasuji.pdfIn PDF document text
- https://www.rydalmereprestige.com.au/wp-content/plugins/super-forms/uploads/php/files/kjqc018tn8lh21c2pmmjj19o47/53758695259.pdfIn PDF document text
- https://k9-warrior.com/wp-content/plugins/super-forms/uploads/php/files/rdv7rf1f4ogmev5oopj8j4vpup/58143581717.pdfIn PDF document text
- http://asja-doll.ru/userfiles/file/doweziwenagixo.pdfIn PDF document text
- http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/eu61366qnjic0rhilla4heju42/25417289226.pdfIn PDF document text
- http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160bc8d71092ea---60478844859.pdfIn PDF document text
- https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ebbcb6b81b---pituturupobexoj.pdfIn PDF document text
- https://omomediacion.com/wp-content/plugins/super-forms/uploads/php/files/df10a7b0962f90b354f2da009295e166/sipane.pdfIn PDF document text
- http://albino-pitti.com/pub_img/file/xefatopudibutojuginusan.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_off0000cbff.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCBFF | 16780 bytes |
SHA-256: 6cb15872f23380186756d4935da7cd886af8b5b3de96a5182c5acc862b4601db |
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font_01_sfnt_off0000f7a0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF7A0 | 10864 bytes |
SHA-256: 0dc6fb0e54d087a06fbe8ee0cdcb4c7f291e47a429a5bc023e4ec722b8f6f3bd |
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font_02_sfnt_off000110c0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x110C0 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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