MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics point towards a phishing or malware distribution campaign, likely initiated via spearphishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.9835
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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Clickable URI points to raw IP address medium PDF_URI_IP_LITERALPDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
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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 http://wooshin.kr/uploaded/file/1381095260a34e903d3a5.pdf
- http://thaiboxes.com/piceditor/file/4218120124.pdf
- http://schodylux.pl/userfiles/file/33360232343.pdf
- https://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/8h0ssq96qco2om4m0ra9be68fn/11323405568.pdf
- http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/160a0f450cfc49---rorunevedevuwogipobid.pdf
- http://mirandatutoringcentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a17962f0bab---88848761229.pdf
- http://ndt-tl.ru/upload/file/bomugaxaxusugavaxikisob.pdf
- https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/9983e945553392260781a88471b4a35f/sexuzuzozakozosilogasutex.pdf
- https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/b8e03b47b0466aa653eed4ef7d51c173/fipufona.pdf
- http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab30c75b41f---zevupuvofapumebopaziriz.pdf
- https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/bbfb265e9b2cb55e8f3bba921dc9c3e9/47383283825.pdf
- http://bochosushi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b49615b2ad---kulisepafadefesule.pdf
- http://nakatka.com/files/file/naxoralisi.pdf
- https://www.idromeccanicasrl.com/idromeccanicasrl.com/wp-content/plugins/super-forms/uploads/php/files/a57ee2ce62f68d66f546bd1f28617aa0/sunafulodesisidet.pdf
- http://avtoarka.ru/wp-content/plugins/super-forms/uploads/php/files/4726ed565701d43e306441d02f4c3c3d/rinonosetajavo.pdf
- https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/cab00cb2a68a2ef2761b234702279671/76469772085.pdf
- http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/9d110355a9fabdfd493fa7fee210fc26/69944959283.pdf
- https://shared401k.com/wp-content/plugins/super-forms/uploads/php/files/1905e9f29e2eb488f98a0614433c2a88/45794343985.pdf
- https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/73d95a4aab59f18f64e088e90b9c82c2/zuzitiravoxazat.pdf
- http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d79d47d4fc3---5234935633.pdf
- https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/e79a39eed07abbc35b02e765e2f9be53/4238956753.pdf
- http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160862ce52d8a1---wilefejawo.pdf
- http://wallsfamilyreunion.com/clients/876683/File/55444715142.pdf
- http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/16086f5aef29f5---27279745428.pdf
- http://steclotildehorton.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160adc77318918---80955634709.pdf
- http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099b25d745bc---vikonuvuvamuwomepi.pdf
- http://tcurryproperties.com/konadnew/userfiles/file/32986574361.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=the+difference+between+will+and+be+going+to
- 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_off0000f16e.binb5305334ca0fe2c6e8d018c0660481c2e56daa5a75a7580889548d70f06e2422 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF16E | 10776 bytes |
font_01_sfnt_off000109fe.binda34bef091fec02c460ccfc673441e14b3f52859d089811f48c64eeb0d03c0e3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x109FE | 18072 bytes |
font_02_sfnt_off00013800.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13800 | 16792 bytes |
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