MALICIOUS
204
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The sample is identified as malicious by ML classifiers and ClamAV, with high-severity heuristics indicating it's a browser installation lure and contains a download button. The PDF also functions as a link farm, pointing to various external URLs, some of which are hosted on compromised CMS uploads. While no scripts were directly extracted, the nature of the lures suggests a potential for JavaScript execution or exploitation to deliver a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
Heuristics 8
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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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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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://twr1115.net/files/fckeditor/file/71755487056.pdf
- http://envigest.cz/upload/file/mawowanekamaxajub.pdf
- http://svenstavik.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098d8f396e92---9660636236.pdf
- https://daaeportrett.no/upload/file/momugoxeporevemogagul.pdf
- https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/16075aed911a7b---zuterejowiji.pdf
- https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/a4c8e22e12d37c88d0338944541e9d23/30785582933.pdf
- https://metnar.pl/web/uploads/files/85391549070.pdf
- https://southtours.com/wp-content/plugins/super-forms/uploads/php/files/r8bhp48f41f5vc2in8l191vcbh/jijusun.pdf
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0527419f42---10337094493.pdf
- http://myphamlulanjina.com/upload/files/876223626.pdf
- http://www.hydro-tg.pro/upload/file/romefukovapirijirig.pdf
- https://amblamy.ee/upload/file/28693236560.pdf
- http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ddf7b027c76---tivareluj.pdf
- https://him-home.ru/wp-content/plugins/super-forms/uploads/php/files/01cdb91b26425dbdee46ecd8a023a26d/42169800400.pdf
- http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160dbc00d751db---numonofekogomuxo.pdf
- http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/160982b96ad43c---jazipo.pdf
- http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/340291253f429598b1f4cf344e2b612b/73864444816.pdf
- http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/1606e0845d7a7a---rotesajulegatesana.pdf
- https://www.prestigeautobody.com.au/wp-content/plugins/super-forms/uploads/php/files/c578a0735165e5ad1d8b75c61e6be0d2/50462488678.pdf
- https://nibrasimansch.com/userfiles/files/devibata.pdf
- http://tandartsindex.nl/images/uploads/nusejukejelarexinogapifu.pdf
- http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609225a406124---72589190911.pdf
- https://forcechicago.com/wp-content/plugins/super-forms/uploads/php/files/976194d7ed75d5d69004b314599ec0d7/xavuxugozon.pdf
- https://bataretak.com/img/files/file/99292643034.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=download+idm+patch+for+64+bit
- 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_off0000eef3.bin61d02b6d76f54525b5275f1e0800cbe7aeaea777c8d383fb44c3b5ef2fd0d7db |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEEF3 | 17068 bytes |
font_01_sfnt_off00011b50.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11B50 | 16792 bytes |
font_02_sfnt_off00013367.binbada8e8123565f6da5c24df205e3914aba17650c6dfdb4eca03d2eaefba0e7f5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13367 | 11060 bytes |
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