MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. The 'SE_BROWSER_INSTALL_LURE' heuristic indicates the document's content likely prompts the user to install a browser extension or update. Numerous embedded URLs, including those hosted on compromised WordPress sites and disposable domains, suggest a phishing or malware distribution campaign.
Machine Learning
- Nyx PDF Classifier malicious score 0.9965
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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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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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://laborke.ru/uplcv?utm_term=duo+mobile+7.0+apk
- http://akpanlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/koxiloginibewu.pdf
- http://liily.jp/upload/file/20210911144335.pdf
- http://omatsuri.kr/data/userfiles/files/madewonavuluwiwel.pdf
- https://gilbertems.com/videos/file/goxagekid.pdf
- https://brune-schmuckwerk.de/ckfinder/userfiles/files/57350015696.pdf
- http://sten.kr/club/data/userfiles/file/20210911202424.pdf
- https://betamachinery.sa/other_files/File/37869359699.pdf
- http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d427bee6a4---30223785312.pdf
- https://mkontroll.hu/File/23515556805.pdf
- http://dvg.asia/ckfinder/uploadfiles/files/luvefapazorezorofuzuje.pdf
- https://emmaushuis.org/pages/89451836752.pdf
- http://xn--rssx31a7tec6p.com/upload/userfiles/files/20210903180525.pdf
- https://rizecanreklam.com/images/file/bunabiromifamoluxubixo.pdf
- https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/pg6v6ekh6e1724bp97n4i5ob0u/fosajiwexasubulokijox.pdf
- http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a5c23be7d9---vegod.pdf
- http://winhazel.com/indigo/ckfinder/userfiles/files/jasinenoxaluzowa.pdf
- https://wrd13.com/force/file/63955077268.pdf
- https://mmeasar.com/mmeasarfiles/file/80048882297.pdf
- http://tasarimak.com/ckfinder/userfiles/files/xegazokasir.pdf
- https://nhatngudongkinh.phapluatvietnam.com/upload/ckupload/files/mifek.pdf
- http://elmiraclassiccountry.com/wp-content/plugins/super-forms/uploads/php/files/38f75ba57eaca7659cfe9fd117d5719e/38312775042.pdf
- https://bengalroys.com/ckfinder/userfiles/files/93287628001.pdf
- http://siamsnail.com/media/userfiles/files/vegubup.pdf
- http://redemaisfarma.com/userfiles/file/85370195145.pdf
- http://tms-technology.com/ckfinder/userfiles/files/84552504750.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_off00011890.bin6a539376ecedc167d94b088769d52fdd5d9b1a42ab5aace2c95fcb862fa76eb4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11890 | 17944 bytes |
font_01_sfnt_off00014775.binafcc73ceeae2d0e9eae3e286d0842767684e19e212b8ac0bcf788c1c0dc3e538 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14775 | 10516 bytes |
font_02_sfnt_off00015f2b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15F2B | 16792 bytes |
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