Malicious PDF — malware analysis report

Static analysis result for SHA-256 bee485856ced5c61…

MALICIOUS

PDF

80.5 KB Created: 2021-09-04 22:29:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 8d1e2007edab78f055c9883e5ecc2594 SHA-1: 23618b6abb2d6aa5d4664eb2678b7b9cc0608008 SHA-256: bee485856ced5c612fd82a412fe7076dc8f9e7de1c9488a925ab5ee398b04e95
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains numerous external URIs and link farms pointing to potentially compromised websites, suggesting a phishing or malware distribution lure. The presence of embedded URLs and the nature of the heuristics indicate it is likely used as a delivery mechanism for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The 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.
  • Embedded URL info EMBEDDED_URL
    One 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://oniceh.ru/uplcv?utm_term=kuran+pdf+indir+arapca PDF link annotation
    • https://armagedonspedycja.pl/files/file/gazanogetovijurudonijano.pdfIn PDF document text
    • http://treeoflifetolfu.com/clients/0/07/07f122ebb3396bb3f917f2e62af81596/File/2872434748.pdfIn PDF document text
    • http://hosungtour.com/FileData/ckfinder/files/20210830_5AA56492461C3A7D.pdfIn PDF document text
    • https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/qbaco5e4vso29o4diolfvafv99/97290199926.pdfIn PDF document text
    • https://exam11.menapoint.com/app/webroot/upload/files/54714895298.pdfIn PDF document text
    • http://vksraja.in/fckeditor/upload/file/ziwasux.pdfIn PDF document text
    • https://treasurehunterdetectors.com/ckfinder/userfiles/files/linamunelizubupi.pdfIn PDF document text
    • https://vaytieudungtragop.com.vn/wp-content/plugins/super-forms/uploads/php/files/2el53jb2i9g6tdmn9t3e2bbtgu/94078883040.pdfIn PDF document text
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/160d8b0e7dd161---wegagifamofitu.pdfIn PDF document text
    • http://novichiha.ru/pic/file/livazaw.pdfIn PDF document text
    • http://dongamold.com/fckeditor/upload_files/file/85709616151.pdfIn PDF document text
    • https://pelicanfinancialnetwork.net/ckfinder/userfiles/files/lumagabatenowaza.pdfIn PDF document text
    • http://neoneofitou.com/ckfinder/userfiles/files/makuwop.pdfIn PDF document text
    • https://www.stamfordtaxis.com/wp-content/plugins/super-forms/uploads/php/files/fbi66vs1nbv5g06of6mjrbcuu8/jipuzexasanideluzaj.pdfIn PDF document text
    • http://www.samlab.com.tr/wp-content/plugins/super-forms/uploads/php/files/mpg1so2mseqi3enrgu459g8n5a/kinuremopumikejowo.pdfIn PDF document text
    • https://bi-kiesabbau.de/cmsimple/images/file/49435679118.pdfIn PDF document text
    • https://edu-mate.kr/_UploadFile/Images/file/vanojiwenaxabitofojepenu.pdfIn PDF document text
    • https://pilot-nav.com/ckfinder/userfiles/files/78996432619.pdfIn PDF document text
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/4cb21a21cd501bcecdb72e41d5d07529/66704130068.pdfIn PDF document text
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/1610764f6d469f---wugubaxoxofipogobovom.pdfIn PDF document text
    • http://angarakshaksecurity.com/userfiles/file/98858472931.pdfIn PDF document text
    • https://vozilasavozacem.rs//files/52758528415.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c3bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3BB 10140 bytes
SHA-256: d6415eb103f710139d324df672cb21b3144c9bf11868188582879e5543490513
font_01_sfnt_off0000da64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA64 18228 bytes
SHA-256: 984f5206175b59853ed8a9a2195179d9092b442e6039741e0c8711eb45ab7828
font_02_sfnt_off0001065b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1065B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00011e6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E6C 16092 bytes
SHA-256: 9d5144547e0b729630886a3ad3ce48e7da84b0115899dd9c2390406af6f0fecd

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