Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec2b52642798604b…

MALICIOUS

PDF

85.6 KB Created: 2021-08-17 23:02:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 8fda8b280d7b98c61c7ce2c1517b4ad2 SHA-1: e425dd1eea6586f477cc8d63b5a640b7bd795312 SHA-256: ec2b52642798604be6128f2d2af1972354a53fd32e7dcb717665e673490cd469
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. It functions as a link farm, with numerous embedded URLs pointing to other PDFs hosted on compromised websites. The primary attack pattern involves luring users to click these links, which likely leads to further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9905

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://manajrgvaaradhi.com/cms-uploads/files/60769906953.pdf In PDF document text
    • http://driver-jazda.pl/upload/file/80705065853.pdfIn PDF document text
    • http://www.fonfe.com/uploads/files/78597413384.pdfIn PDF document text
    • https://hagakure.by/upload/editor/files/jikabapajavefeleda.pdfIn PDF document text
    • http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/161029f5203710---nugebofozefoxujogaf.pdfIn PDF document text
    • https://olivier-daulte.com/ckfinder/userfiles/files/58355401417.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/7a78fd3649667e21183b94d7668d605c/24116768549.pdfIn PDF document text
    • https://yuss.it/file/46332210629.pdfIn PDF document text
    • https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/dea66b2cf997b6f28fcdd6544552935d/74597283758.pdfIn PDF document text
    • http://harchovyk.com/userfiles/file/39547199183.pdfIn PDF document text
    • http://simonide.org/userfiles/file/sufiwebivenikum.pdfIn PDF document text
    • https://riolospettacoli.it/filesUploads/file/23579770223.pdfIn PDF document text
    • http://greer2001.com/clients/e/ea/ea56749d84c1a2d7db36d2c51c833a37/File/5826727909.pdfIn PDF document text
    • http://maketmaster.ru/admin/ckfinder/userfiles/files/21867058829.pdfIn PDF document text
    • http://zoncmswebsitebeheer.nl/files/editor/file/50787781444.pdfIn PDF document text
    • https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077ba39f1d41---mosafevirevaraw.pdfIn PDF document text
    • https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/d49b0d3da868d3402aa18df9d9ae6bd3/mupujopi.pdfIn PDF document text
    • http://big-blue-bus.com/pics/fotos/1/file/22774517536.pdfIn PDF document text
    • https://master.plus/wp-content/plugins/super-forms/uploads/php/files/95c9640f709df0e00c12a6fd9fb336ec/mixivokuki.pdfIn PDF document text
    • https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/aa53df6752c8e7ca7cd6d261dba18b1f/tusonizopexojijekax.pdfIn PDF document text
    • http://creative-format.com/upload/editor/files/12456252800.pdfIn PDF document text
    • https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e2bb1f1e852---povugutikigigopota.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/a2ojqmsr6976ner5998r962od5/32230423763.pdfIn PDF document text
    • http://itaindustrial.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16074b23f4c812---kupadawodilojoregaz.pdfIn PDF document text
    • https://kodcomputers.ro/2664/uploads/gisinotedinabik.pdfIn PDF document text
    • https://chokysitohang.com/Uploads/userfiles/files/fifufavakanitovubezuliti.pdfIn PDF document text
    • http://bearings-home.com/userfiles/file/likinoxodu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=cual+es+el+camotePDF link annotation
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA90 10228 bytes
SHA-256: 1ccedd38accc9ffa11805e868b0a534047148d4288f7b56c28f7b768c8733b1f
font_01_sfnt_off000101a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101A3 17960 bytes
SHA-256: cc94bdd4231376ad3d19b819a637fe66af26e181cf70e92834c03516a0dff892
font_02_sfnt_off00012f20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F20 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.