MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF document contains numerous links to external websites, many of which are hosted on compromised WordPress sites, suggesting a link farm or redirection scheme. The presence of 'invoice' or 'payment' language, combined with the high number of external links, indicates a phishing or malware distribution attempt. ClamAV detection and ML classification further support its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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 https://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/160b428e70a304---80989108274.pdf
- http://dzbnf.com/upload/file///mujelerutorogivub.pdf
- https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/98b1eba83d0e8052cabffd72db047616/xavakule.pdf
- http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/a7486cd1e49365ad507c70088dad8379/41470114466.pdf
- http://transsnabstroy.com/userfiles/file/sakol.pdf
- http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096f878277b6---fijuvo.pdf
- http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/c6389a050538b4516cc1a27a4d4c7838/85465252724.pdf
- https://morethancleaningservices.com/wp-content/plugins/super-forms/uploads/php/files/05ec1517ea6f91ae81be952171570aab/39588672934.pdf
- https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/2d450abffebfbdcc6091f95c477ffed6/menosumow.pdf
- http://quickvideo.nl/userfiles/file/nopagisise.pdf
- http://hodgesmageefamilyreunion.com/clients/c/c9/c95619ca3ec29dd030dc8935b97378d4/File/32341939886.pdf
- https://sieuthimaytinhcu.vn/upload/files/begomeferoxekom.pdf
- https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/kjr8774p5ufvok3j8ubqdpda4a/52755357067.pdf
- http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16085235226cb8---wibijofavovexot.pdf
- http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1608a7ae0ec097---71993583865.pdf
- https://cashmeredreams.com/wp-content/plugins/super-forms/uploads/php/files/5ddaf2af34cb521516b69330b503d240/17652501562.pdf
- http://kino-profi.com/wp-content/plugins/super-forms/uploads/php/files/5d2bbce7bca33dee107a03bc55293bea/funuzutep.pdf
- https://jf-orvalho.pt/userfiles/file/mojaposu.pdf
- https://floresdeserrezuela.com/aym_image/files/16196974156.pdf
- http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606caf401b0ba---44990031130.pdf
- https://ctapigroup3.com/contents//files/xoxibemimi.pdf
- https://orkhaconstruction.com/wp-content/plugins/super-forms/uploads/php/files/itb2ml48ja79mbj42ar3c1rij3/sapoteresesawotinuviwaz.pdf
- https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/b801f3e7f59422aaaacf3c1ada9ed9ff/47320449399.pdf
- http://pelesiuvalymas.lt/i/File/sajexekozazonavipokomu.pdf
- https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/160972d6f3aea6---65168934918.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=how+to+write+a+receipt+for+private+car+sale
- 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_off0000e06e.bin64f8b4d130630711e432c102051dfcfbef3798898228ea02b2292bfacae6e5fa |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE06E | 10512 bytes |
font_01_sfnt_off0000f888.bin7087c86f838db9e543a89abdc931b5f4d2b42a265e6d4231d7c9add258f273a0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF888 | 16196 bytes |
font_02_sfnt_off00012263.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12263 | 16792 bytes |
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