MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample was flagged by a machine learning classifier and ClamAV as malicious. It contains numerous external links, many pointing to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users. The presence of these links and the PDF's structure indicate it's likely a lure for phishing or to download further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9966
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 http://artc-polymers.com/upload/images/files/gisavomataporejiber.pdf
- http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/0nmb5g3fg3dufv496rrps76iok/49081457602.pdf
- https://tahuacoop.com/cms_gpadmin2015/sgi_userfiles/userfiles/files/gatigerokuneduladi.pdf
- http://oletrans.sk/editor_uploads/files/77632417941.pdf
- https://rougezenekar.hu/files/file/76100412997.pdf
- http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/1613a4fb7ed2ac---fukuxudowawarituwe.pdf
- http://thai-apsproducts.com/file_media/file_image/file/godisobefigaj.pdf
- https://snapstudios.ca/userfiles/file/nizukonebujinurikuniji.pdf
- http://studiofranzoni.eu/userfiles/files/vumogazofopapuximonudaleb.pdf
- https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613790743eebf---dalisopawisiti.pdf
- http://drxzhang.com/userfiles/file/penakaluwijizudova.pdf
- https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/konb5oactov7nu6d8uu82s7fc5/fififevifuraz.pdf
- https://arnetbilgisayar.com/upload/ckfinder/files/miwanerijenotupak.pdf
- http://bladensburg.abwingsmd.com/uploads/files/zuramuzenisogoxome.pdf
- https://hongmao.tw/uploads/files/202109112303201370.pdf
- https://pfollowers.com/ci/userfiles/files/34928785075.pdf
- https://www.cosanuesa.com/componentes/editor/ckfinder/userfiles/files/nawiriromudo.pdf
- http://sungwoneng.com/upfile_editor/2021/files/85529317549.pdf
- https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613857b39f24e---54877713156.pdf
- http://nerezove-kuchyne.cz/UserFiles/File/35956609185.pdf
- https://sergiomauri.com/images/file/95867854371.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=joystick+apk+for+pokemon+go
- http://zs.tom.ru/jsplugins/ckfinder/userfiles/files/jifiludoworotal.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_off0000c5f5.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC5F5 | 16792 bytes |
font_01_sfnt_off0000de0c.bincda1133b3b8b69f7898acdca7a7aba82252d208d94f40c6f47a2b37f72301def |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE0C | 10976 bytes |
font_02_sfnt_off0000f7a4.binc03fa824597823332507d579a9164b80c8bc8f5a394d7061bf7273c016bf3315 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF7A4 | 19288 bytes |
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