MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier with high confidence. It contains numerous external URLs, many pointing to compromised WordPress upload directories, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://queure.ru/uplcv?utm_term=sweet+and+sour+chicken+noodles
- http://flirtproducties.nl/ckfinder/userfiles/files/80725744825.pdf
- http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160833670f0d90---15457790891.pdf
- http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d237b261403---gobewafoxojajuvozunosiza.pdf
- http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c0a73d0d26a---gujinomujurajafudavemugez.pdf
- https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/e776f9182194223a48d23ab2631af24d/45308947234.pdf
- http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9176f754d5---bejar.pdf
- https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607da7b6927c9---15504755589.pdf
- https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/d6b56f3434ede1295916907cabe93f83/kinutex.pdf
- http://akcjonariusz.com/UserFiles/file/degasukezabenikojanewu.pdf
- http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2ad52adbe6---58762906149.pdf
- https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/c6b05e67011dcd23bea34c39873b8fd7/22818972338.pdf
- https://medtek.vn/storage/file/65141725132.pdf
- http://optimus.org.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608b37a68fab6---nixorokusafodozam.pdf
- http://shsuorui.com/uploadfiles/fckeditor/20210621/file/16242265555201.pdf
- https://phoenixknights.co.uk/wp-content/plugins/super-forms/uploads/php/files/8938410a15c43c0970dbc97e2fa40978/sepik.pdf
- http://allg-gyn.ch/userfiles/file/41504884753.pdf
- http://angelcabrera.com/FCKfiles/file/gidenodokebeto.pdf
- http://cuacongtrinh.vn/upload/files/xoziwekabupefuzusaba.pdf
- https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/qfq1gsu331471a65p0mimu6ak3/kabasejiwa.pdf
- https://energooptima.hu/upload/File/76477677233.pdf
- https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b8b2a577c91---77009149943.pdf
- http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/c0b8bd40ad24763bfb980208060122a1/92491032672.pdf
- http://doo-san.com/userfiles/file/20210523003259.pdf
- http://axiomestates.com/userfiles/file/42355236047.pdf
- http://55thocscompany.com/clients/62662/File/sixijimoji.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_off0000f4bc.bin5cc1c610e462ae731ae13d32d516b09c8c346983935b6adc164dfddde7023db5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF4BC | 10820 bytes |
font_01_sfnt_off00010dac.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10DAC | 16792 bytes |
font_02_sfnt_off000125be.bin75577eefe7a875d9e4d3588544eefce33e5c0625b4d7eb080390d8c99d78c6bf |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x125BE | 17660 bytes |
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