MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting a phishing or malware distribution campaign. The heuristic 'ML_NYX_PDF_MALICIOUS' and ClamAV detection strongly indicate malicious intent. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, likely serving as a lure to click on the embedded URLs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
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://garglob.ru/uplcv?utm_term=online+merge+two+jpg+files+into+one
- http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607887fdd162a---sigosotowa.pdf
- https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609ab5b193f56---zikiwu.pdf
- https://nceptionsolutions.com/wp-content/plugins/super-forms/uploads/php/files/9607349da3fe70b79637bca17704c3da/pufuderazuzorun.pdf
- https://gresathouse.com/wp-content/plugins/super-forms/uploads/php/files/83787d418f5030b9b9d5bb8302c4dd59/20788637882.pdf
- http://antifftech.com/uploadfile/file///2021050415023979.pdf
- https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ffb450b79c---22247905573.pdf
- https://weinquartier.at/wp-content/plugins/super-forms/uploads/php/files/6b76341095c37384e093beaa0d07e30d/19897282528.pdf
- http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16082411c64d9b---4885305707.pdf
- http://bright-mineral.com/uploadfile/file/2021062412545088.pdf
- http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7518b21e3---84468091972.pdf
- http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/160bc6358a8e69---tepefule.pdf
- https://ensasoft.com.tr/wp-content/plugins/super-forms/uploads/php/files/9i24iv2uk3oj0vdh4e6r559sau/34554544110.pdf
- https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/c1t7odv1ffd3j5fr3oiu48iq4m/9254756937.pdf
- https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/87ce909113e2e933f2aff2b03d2efc0e/74492686891.pdf
- http://mywayrtk.info/userfiles/file/55492926317.pdf
- https://thejinglelab.com/wp-content/plugins/super-forms/uploads/php/files/bdu8j1h13051rbope7ivtvr4aa/29227371383.pdf
- https://lightingsystemscol.com/wp-content/plugins/super-forms/uploads/php/files/c1f2ddbee6822a95d7b6ede25614bafb/lujutavofujuxagotitipim.pdf
- https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160a22ac6be9bc---33442016492.pdf
- http://technoculture.cz/admin/upload/file/80067344939.pdf
- https://gikguamerica.com/userfiles/file/45824305534.pdf
- https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097e50d5b895---befopumadepopoxak.pdf
- https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7f5a84f3d3---32364241718.pdf
- https://popcouncilinstitute.org/wp-content/plugins/super-forms/uploads/php/files/d191a898c430ead4f34de1476ae66c87/giteve.pdf
- https://www.dolphinrfid.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094c3ddaaa6d---kakujutute.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_off0000e464.bin2b22bbab1e14331a74d406aea5b416fc7dfdb00897888959537037366f5c9232 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE464 | 17108 bytes |
font_01_sfnt_off0001110a.bin8c4888f272c36c06c9d7b1bde5cc215c4695d4fce745b48aa02923d1f5761a87 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1110A | 10780 bytes |
font_02_sfnt_off000129e0.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x129E0 | 16792 bytes |
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