MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many hosted on compromised CMS platforms or disposable domains, suggesting a phishing or malware distribution campaign. The presence of PDF-specific heuristics like 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this, pointing towards a tactic of using compromised infrastructure to host malicious content. No scripts were extracted, but the overall structure and URL distribution are indicative of a phishing lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9964
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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://synerhu.ru/uplcv?utm_term=annual+check+up+obgyn
- http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b3a34558bba---26285325490.pdf
- https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/ecgt4rh6v1bsf1id2akeo714r7/80627358527.pdf
- http://mamnonkitty.com/webroot/img/posts/files/78645480927.pdf
- http://alarcon-v.com/editor_upload_image/file/11741424729.pdf
- http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160792524cd0e2---dotizemadarukerivekonome.pdf
- http://tulsamemorialclassof71.com/clients/84987/File/wamuzeg.pdf
- http://hydrogears.com/survey/userfiles/files/3244309129.pdf
- http://doubletroubels.com/wp-content/plugins/formcraft/file-upload/server/content/files/160786df4d9e48---90505004563.pdf
- http://adria-ex.com/images/blog//file/sururufi.pdf
- http://phuwangnam.com/user_file/file/91585363868.pdf
- http://coming-c.com/userfiles/file/pofebubakezop.pdf
- https://www.herewardcarpets.co.uk/wp-content/plugins/super-forms/uploads/php/files/ji21crbpfnvg7mb2lc9lhpfp1g/mobakogajelororawis.pdf
- http://adance0112.com/upfile/editor/file/99657493286.pdf
- http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c0cdcc3512---wefutubewivubuw.pdf
- http://bettaletroom.com/file_media/file_image/file/74292677840.pdf
- https://asiaviews.org/wp-content/plugins/super-forms/uploads/php/files/hiavtrv5626mvl9ri86vjt6sp1/dinabozu.pdf
- https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/3d7e8208bebee4d03f959a1d7ad2e986/dapojimiz.pdf
- http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c1cb9aa3c08---kinovabaxepemonaf.pdf
- https://tocgia247.com/wp-content/plugins/super-forms/uploads/php/files/snl3mn6o4pcee9k42mc0pusehe/muredisuferunebakulo.pdf
- http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c1b9ae71af9---tadusegozukaza.pdf
- http://diversecityuk.com/userfiles/file/52617530968.pdf
- http://dienlanhlongan.com/upload/files/93000823385.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_off0000e91b.binb0e777f709fcfa718118552a397236e0dfc05d9b7fbaa8532c1f70ef7a19f80b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE91B | 16632 bytes |
font_01_sfnt_off00011425.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11425 | 16792 bytes |
font_02_sfnt_off00012c3c.bin2ea9a7d0f0e854d2667528f13464da1b74bccda9ccc30fead0f8be5f4ee9df67 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12C3C | 10624 bytes |
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