MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external links, many pointing to potentially compromised websites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of a 'download button' heuristic further indicates a lure to trick users into downloading a payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://cructi.ru/uplcv?utm_term=qwick+live+apk
- http://nhasachthunam.com/upload/files/57095712099.pdf
- http://dlzhrjd.com/images/uploadfile/files/20133154763.pdf
- http://skogsformedling.se/bilder_umeny/File/xeratepikozibazerik.pdf
- https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/9377725f68bea321e33ab58e28df5b7f/tijatuvatudamanifewe.pdf
- http://yjeverspeed.com/userfiles/file/78247788639.pdf
- https://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ff9e5cceaf---46763562313.pdf
- https://keluargamimpi2.com/contents/files/xepadovanivabulisijag.pdf
- https://www.tcf.gov.tr/ckfinder/userfiles/files/mujuzafezesigadepok.pdf
- https://limpiezasinasel.com/userfiles/files/pekexijuvuveduwa.pdf
- http://ndt-ultratech.com/files/29702424982.pdf
- https://iskoruma.com/upload/ckfinder/files/kojomipasamegudipopumug.pdf
- http://nuocmambason.com/upload/fckimagesfile/f4e7c1004d0ac261d3ae8514869211a4.pdf
- https://www.singaporemedicalclinic.com/ckfinder/userfiles/files/70670209248.pdf
- https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613735956693e---zifajevegixitizag.pdf
- https://bilegt.mn/userfiles/files/63378832734.pdf
- http://www.aportecnica.com/imagenes/editor/file/gofilu.pdf
- http://challendor.com/fckeditor/upload/file/71551439019.pdf
- https://cottonweb.net/userfiles/file/pesugolixutude.pdf
- http://datcat.vn/2018/file/18653374459.pdf
- https://deepex.hu/hirek/files/90936993712.pdf
- https://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/5e21a80c0297155b20a61ce55fa9f30b/mujegifavexafubasobojamaz.pdf
- https://rsvforum.com/userfiles/file/54464262432.pdf
- http://bischofs-scheune.de/userfiles/file/45443600518.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_off0000d7ca.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD7CA | 16792 bytes |
font_01_sfnt_off0000efdc.bina05b3567d0a51d022f212b02ea7598561296c6c2675cc3bd0db84c4e909cfee6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEFDC | 19276 bytes |
font_02_sfnt_off000122be.bina0a9877d657fd9ee0c6f12b82e01414766a2c1bcd6373ce4a5385496fe3610d9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x122BE | 10080 bytes |
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