MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous URLs pointing to potentially compromised websites or link farms, suggesting a phishing or malware distribution scheme. The PDF structure and embedded links are indicative of a spearphishing attachment, designed to redirect users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9986
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://irlanc.ru/uplcv?utm_term=investment+constraints+pdf
- http://espacioschillout.es/images/admin/file/linefudijazaxis.pdf
- https://roadtoring.com/wp-content/plugins/super-forms/uploads/php/files/087bbfc2fa64ec91e93d49554d537954/tukalurizereb.pdf
- https://spazmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cfc9d836eda---tobopituxunopizewakixe.pdf
- https://unique.global/wp-content/plugins/super-forms/uploads/php/files/95d1ed74e9969217d683bcdf53acb6d7/41160802640.pdf
- http://babywagen24.de/userfiles/file/fusikomum.pdf
- http://calisnt.com/uploads/files/38213135999.pdf
- https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a97febcf3dc---wexozifenofuwodorupi.pdf
- https://forcechicago.com/wp-content/plugins/super-forms/uploads/php/files/d68499c8064420f3294f3245af54eee2/tamowuxaxoliwede.pdf
- https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608416243a6e4---difatofobukutetobe.pdf
- https://pacpartner.net/images_client//imagesfile/pikumon.pdf
- https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609619d90202c---wenajabirakitedes.pdf
- http://smartvoicecom.com/userfiles/17851499623.pdf
- http://skybuildinfraprojects.com/uploads/61440772259.pdf
- http://pulsarvn.com/media/ftp/file/22115942935.pdf
- http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607eae9edaa4a---kekajaduvizupu.pdf
- https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/brp5tckjplbej5pp3umkpbl8l5/xofamefokel.pdf
- https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606caac022259---58892507075.pdf
- https://adepotcustom.com/UploadFiles/file/20210611122342200.pdf
- http://www.kammerpop.de/files/file/48772176542.pdf
- https://www.charityweiss.de/wp-content/plugins/formcraft/file-upload/server/content/files/16080509df3304---39663723142.pdf
- 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://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_off0001915b.bin25e11ddcca678f03dda5337d2f6348286cb8a9b919332753e2c24ac990d24c85 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1915B | 10752 bytes |
font_01_sfnt_off0001aa1c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1AA1C | 16792 bytes |
font_02_sfnt_off0001c22e.binda750e5fb2630493f31cdd62887c81240d7e3e8c5042ad8ac75a2dd46d502287 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1C22E | 17592 bytes |
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