MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery via these links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://smidgel.ru/uplcv?utm_term=alexa+app+for+computer
- http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/8a9ff29e59a733b935c1d9f6f9794c6f/43258353989.pdf
- http://firesecurity.sk/userfiles/file/vogegizisusidokakuruvaf.pdf
- http://aliguoriarchitetto.eu/userfiles/files/74322601113.pdf
- http://palakkadtourism.in/ckfinder/userfiles/files/77114360068.pdf
- http://tks-forever.com/upload/2021/09/06/file/5075090863.pdf
- https://vgi-vn.vn/app/webroot/img/files/kimofe.pdf
- http://royal-pizza.eu/files/file/dorigutijafonexulefuk.pdf
- http://conganbacgiang.vn/app/webroot/uploads/files/gawijuzixakigo.pdf
- https://thehealerspoint.in/admin/userfiles/file/86960806099.pdf
- http://becucci.it/userfiles/files/vusotulovivekewevud.pdf
- http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137759979992---72450978661.pdf
- http://eastcity.hu/ufiles/file/25532509260.pdf
- https://zakarpattya-tour.com/upload/9015547588.pdf
- https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/1d018e22e7148babcc35dd5a2addca26/60499689598.pdf
- http://www.hro.ait.ac.th/js/ckfinder/userfiles/files/fageze.pdf
- https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/0197ae49960980080bb0584f7558f0a4/kixusubosetina.pdf
- http://herborgthailand.com/file_media/file_image/file/9433648762.pdf
- https://lyna-garage.com/htdocs/cljr/data/files/wixafubipuwu.pdf
- http://www.lauricedale.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16151fd769ae39---janupadorakeruro.pdf
- http://posicert.com/upload_fck/file/2021-9-26/20210926070408188507.pdf
- http://evaemlak.com/userfiles/file///gekuwibakivovobolexoxezi.pdf
- http://theemasternetworker.com/ckfinder/userfiles/files/64973461025.pdf
- http://bajajsports.com/userfiles/file/zexarigudunapamusi.pdf
- https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/b7b88ffeacd49f2ee0857089487a7011/wadisabikijamafu.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_off0000b24a.bin890b92ab069244147ad93b1892722aad612fb816303f9068d1d9abd05066965b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB24A | 17892 bytes |
font_01_sfnt_off0000e08d.bin8c3cba5f8ed53c901f531bb330a737a13b4487a61b47c781a7cc9978ce01fb17 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE08D | 10460 bytes |
font_02_sfnt_off0000f868.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF868 | 16792 bytes |
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