MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs, many of which point to compromised CMS upload storage or disposable hosting, indicating a link farm designed for redirection. The 'SE_CALLBACK_LURE' heuristic suggests a phishing or scam pretext, and the ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the nature of the URLs and heuristics points to a phishing or redirection attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
Heuristics 7
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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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 http://bsp-oblspl.org/ckfinder/userfiles/files/vujelolidotejekipagari.pdf
- http://vcelari.naceradec.cz/includes/ckfinder/userfiles/files/71437556841.pdf
- http://suankaew.net/upload/userfile/files/fakozabodixoma.pdf
- http://ballstonfamilymedicine.com/clients/861402/File/62860320033.pdf
- http://short-story.ru/upload/file/39895238311.pdf
- http://chothuexehochiminh.com/userfiles/file/donirorudor.pdf
- http://shield-in.com/userfiles/files/kuvunesitevoxopavinos.pdf
- https://pergamine.com/ckfinder/userfiles/files/tivunixumafagoxawidos.pdf
- http://berbun.com/user_img/file/89968710897.pdf
- http://bukharaatlanta.com/sites/default/files/file/43236065020.pdf
- http://centrumbiznesurawicz.pl/userfiles/file/23604466307.pdf
- http://jjmcp.jp/userfiles/Image/file/30322224707.pdf
- http://www.derbysignandgraphics.com/uploads/file/vowupimi.pdf
- https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c949e9e8ffa---boxepik.pdf
- https://jxlmedu.com/file/files/20210629_055000.pdf
- http://wypelnienia.kratex.pl/wp-content/plugins/super-forms/uploads/php/files/67a6cf22c9cfb9e9af016d8e06909025/2574896892.pdf
- http://cathugo.de/res/wysiwyg/file/dugojoboru.pdf
- https://lawina-radom.pl/files/file/95071820291.pdf
- http://xn--80aamdqpfpr.xn--p1ai/upload_picture/kopomovobox.pdf
- https://imapcb.org/wp-content/plugins/super-forms/uploads/php/files/5b67d69735fa5bb24c1bc384497790ba/7352377364.pdf
- https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b9ef77efb0c---63831127321.pdf
- https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/089bd5b197f38aa5dce36068c4964123/guxar.pdf
- https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/msukh0c0c08oh3ons98p1lm5c4/92980506681.pdf
- https://clubforeducation.com/FCKeditor/userfiles/file/gewinuwixafenasuzut.pdf
- https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8bdb8da20---5362300087.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=companion+for+2nd+mbbs+15th+edition+pdf+free+download
- 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_off0000df6b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF6B | 16792 bytes |
font_01_sfnt_off0000f782.bin02f61a938ddc96b8deb089fe53ef575ddc2c9f1fb08b5a72b6b510fb02b1e63f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF782 | 11328 bytes |
font_02_sfnt_off000111ea.binabf0a63a8a739d99a853109a5e07c67585031d2f37bdb21c615cad728daf6d67 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x111EA | 16852 bytes |
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