MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The ML classifier and ClamAV both strongly indicate this PDF is malicious, classifying it as a phishing trojan. It functions as a link farm, directing users to multiple external URLs, some of which are hosted on compromised CMS upload storage and point to other PDF files. This suggests a multi-stage attack where the initial PDF serves as a lure to download further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9966
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://xn--z4qq44i.tw/upload/actfiles/zonavusuf.pdf In PDF document text
- http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/16130495e8511d---58704454283.pdfIn PDF document text
- https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/16133aeaec42b2---45886341060.pdfIn PDF document text
- https://romalasergroup.com/userfiles/files/40988606306.pdfIn PDF document text
- http://sosonomo.com/ckfinder/userfiles/files/luxel.pdfIn PDF document text
- http://palakkadtourism.in/ckfinder/userfiles/files/26539514296.pdfIn PDF document text
- http://schoonhovensvrouwenkoor.nl/ckfinder/userfiles/files/wekovojawolabudedib.pdfIn PDF document text
- http://studioboscono.it/userfiles/files/5169480789.pdfIn PDF document text
- http://anthonyjcincottalaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/86872315779.pdfIn PDF document text
- https://mimpishio2.com/contents/files/dovagifurufotiwafamilu.pdfIn PDF document text
- http://oticonshop.net/ckfinder/userfiles/files/kanusawexejadasemil.pdfIn PDF document text
- http://ahcxdq.com/uploads/file/161131463434.pdfIn PDF document text
- http://tjjjsh.com/uploads/files/31336297207.pdfIn PDF document text
- http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/1612f7eeed0366---kodavefix.pdfIn PDF document text
- http://eros-arena.name/eros/userfiles/file/9635415713.pdfIn PDF document text
- https://santehsevast.ru/userfiles/files/88158172449.pdfIn PDF document text
- https://sanidom.pl/img/file/titepipexarinovugojotibu.pdfIn PDF document text
- http://eau-msu.ru/ckfinder/userfiles/files/wukizugijudoz.pdfIn PDF document text
- http://najlepsietorty.sk/uploads/fck/file/72992832569.pdfIn PDF document text
- https://braus.uz/images/shared/file/8471105581.pdfIn PDF document text
- https://vinaarc.com/app/webroot/files/ckfinder/userfiles/files/vorutanugigipadukutoru.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=one+mo+chance+123moviesPDF 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_off00011daa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11DAA | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off000135c1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x135C1 | 10688 bytes |
SHA-256: 238413d49f1f7de3d77c9839a32b9867ab36c01a0a208e8752ca3966d5bcf47a |
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font_02_sfnt_off00014e30.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14E30 | 18884 bytes |
SHA-256: a8ee35a556106ea344c675c97e5b2e122d52caf9bba6b2ee16d5c7535853c947 |
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