MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file is a PDF that exhibits characteristics of a phishing lure, specifically related to invoices or payments. It contains numerous external links, many of which point to compromised WordPress sites hosting further PDF documents, suggesting a distribution network. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to deliver a secondary payload or phish credentials.
Machine Learning
- Nyx PDF Classifier malicious score 0.9934
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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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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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://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/160db67e204290---97255330691.pdf
- http://go-trec.com/wp-content/plugins/super-forms/uploads/php/files/r87ke014mactetop8ibebb90o0/lesarifarax.pdf
- https://maspacientes.es/wp-content/plugins/super-forms/uploads/php/files/6qio749bif8igt42tm83ljbc7t/46773746800.pdf
- http://dragonera.cn/admin/userfiles/file/xudexovo.pdf
- http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/a18d22eb55f53d937e5cab82d05f6089/pavotorar.pdf
- https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/48umofo5m92lnnf2jeqmtoahvj/wobatasidinizaremopipom.pdf
- https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16080bbde466ec---buxiwebu.pdf
- https://teenvolunteerdallas.org/wp-content/plugins/super-forms/uploads/php/files/50ad563faad989f8cea6ef929f94a4d1/juwasusuz.pdf
- https://ajwatravel.com/wheelmarine/userfiles/file/85169083853.pdf
- https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/3eqmbsk32of7civtg2s1lm16a0/36198739883.pdf
- http://khaskhaan.mn/uploads/userfiles/files/dazugezusidipoveduja.pdf
- https://bhiringisamsankalimandir.org/ckfinder/userfiles/files/fewixuvozepuratebekaduj.pdf
- http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/1607f7d53052c1---76988526473.pdf
- http://adamlegal.com/userfiles/file/22470932738.pdf
- http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b10e5bae039---norugetimanigavowebeti.pdf
- https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/a149716527ff8a5a2981928ec9d3ee01/tamononezijoxana.pdf
- http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160868d6563495---barerixefaf.pdf
- https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607f427d8d31e---37551995583.pdf
- http://prinsart.ro/uploads/files/88533579183.pdf
- http://hutbephottaihaiphong24h.com/upload/files/tonokijolasazamawovefogaf.pdf
- http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/e4b01hsgs3mtfgrimt8191ud02/sutanuxanenuvu.pdf
- http://acril.ru/ufiles/files/1978878795.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fec7cd5c5b---58248214927.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=excel+calendar+template+2020+free
- 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_off00012e44.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12E44 | 16792 bytes |
font_01_sfnt_off00014656.binb8b7543f5f36a072297c5a7caba9904f38ce4c0ac3d38cb3b567913057c8a38b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14656 | 19032 bytes |
font_02_sfnt_off000177fe.bin2c39998e269e43781d434b62cc06e4a17b1cdec64780bd9b9c993d0441514017 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x177FE | 10728 bytes |
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