MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF document was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous embedded URLs, many of which point to disposable hosting or compromised CMS upload directories, suggesting a link farm designed to redirect users to malicious sites. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, lacking clear user-facing content but containing numerous embedded URIs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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 http://1day2night.com/UserFiles/file/51191792375.pdf In PDF document text
- https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/9nko8820259adfh44htohvph36/78876138428.pdfIn PDF document text
- http://mobiliteit.nu/files/wawaxav.pdfIn PDF document text
- https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/s83p9mtd32vaugk7tps6k5jue1/jemesonifavudimusotajisop.pdfIn PDF document text
- http://uptownherndon.com/uploads/files/66701572869.pdfIn PDF document text
- https://kvgrup.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/16136d6022e354---78469721977.pdfIn PDF document text
- http://mitsubishilongbien.vn/images/ckeditor/files/xigakuwe.pdfIn PDF document text
- https://baxsporthorses.nl/userfiles/file/18133271562.pdfIn PDF document text
- http://busankid.com/webfiles/board/file///zapimodavejezaf.pdfIn PDF document text
- https://austarpharma.austarchina.com/upload/files/kaxuwolularojumerafi.pdfIn PDF document text
- http://leguido.net/files/13007051639.pdfIn PDF document text
- http://kaies.net/upfiles/2109110352065668142o05pz.pdfIn PDF document text
- http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16131706cc80ba---tulirubidufaratafap.pdfIn PDF document text
- https://cottonweb.net/userfiles/file/71623703598.pdfIn PDF document text
- http://24cvety.ru/upload/files/geruxoxoduzut.pdfIn PDF document text
- http://oikoscoccatoarchitettura.com/userfiles/files/fimosukifoxewasum.pdfIn PDF document text
- https://myclubowners.com/userfiles/files/fulijolerumafez.pdfIn PDF document text
- http://citadelcaralarms.com/userfiles/file/33662693215.pdfIn PDF document text
- https://aromamarketing.md/img/files/dofakagofaxosemi.pdfIn PDF document text
- http://op-gold.com/ck_image/files/zofajiv.pdfIn PDF document text
- https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/640d14ace51897b171cdc6d89e4921df/fonafug.pdfIn PDF document text
- http://belovosushi.ru/files/negogoto.pdfIn PDF document text
- http://cleanking.net/userData/board/file/93676384830.pdfIn PDF document text
- https://ayurmitra.com/files/file/24282233914.pdfIn PDF document text
- https://ajwatravel.com/wheelmarine/userfiles/file/94801814895.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=guitar+tuner+versi+lamaPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000c6b6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC6B6 | 17060 bytes |
SHA-256: 98e31c710ee5d2599dcc3cf4e375e0ea9f035f46417ee7a20972e7ba8bd86e43 |
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font_01_sfnt_off0000f2c9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF2C9 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010ae0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10AE0 | 10356 bytes |
SHA-256: cd5c5b569582abb901f5767fc627093755403e65e785c0671245d5279c196ca0 |
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