Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee62b40e2b3fe327…

MALICIOUS

PDF

88.3 KB Created: 2021-09-05 02:16:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 5f519f6c7beb4fafd276f758648b3464 SHA-1: c919c4fa660c797732b623ba4f33d48ab9994350 SHA-256: ee62b40e2b3fe327d0b52f6b2f3507844ffec25314782abf80b6b9453abc0228
156 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 a large number of embedded URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The document body is heavily obfuscated and unreadable, but the heuristics indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://infrive.ru/uplcv?utm_term=11+ideas+de+navidad+2019+manualidades PDF link annotation
    • https://planningpvedh.nl/ckfinder/userfiles/files/1781434075.pdfIn PDF document text
    • http://sunarfactory.com/userfiles/files/55546558046.pdfIn PDF document text
    • https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160f5644eab6a8---migitoxakeki.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/160cadbc1b7495---wupixuba.pdfIn PDF document text
    • http://ooexperience.be/assets/Image//files/90073177746.pdfIn PDF document text
    • https://oneremote.ru/wp-content/plugins/super-forms/uploads/php/files/a4b39ca50efb54d38fcc226f7151a9d3/10347303033.pdfIn PDF document text
    • https://banghenails.com/upload/file/nebolakinovewiwixiguzu.pdfIn PDF document text
    • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/1607e4044b95f8---61018409987.pdfIn PDF document text
    • http://www.pilartangguh.com/file/18172662305.pdfIn PDF document text
    • https://www.myjamaicais.com/wp-content/plugins/super-forms/uploads/php/files/bc3c38c7baff94d78b26d43d3db41d57/72116916184.pdfIn PDF document text
    • https://mariellatriolo.it/public/file/vejejelifopetu.pdfIn PDF document text
    • https://bienenaktuell.com/sites/bienenaktuell.com/files/file/63091756974.pdfIn PDF document text
    • https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/a4cdbd425ffd060467a7020b63d0a8af/lowavisoninukeri.pdfIn PDF document text
    • https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611bef8578c3f---gomuwaxegumik.pdfIn PDF document text
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1609cf81660350---jekemekuraxamewamepini.pdfIn PDF document text
    • http://mognational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e8bf7335db---jegawoped.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f8cea332b61---79086680660.pdfIn PDF document text
    • https://toromecanicorodeo.com/files/befifovozovafareda.pdfIn PDF document text
    • http://rbtyutj01.com/userfiles/files/33182557710.pdfIn PDF document text
    • http://criminisiepartners.it/userfiles/files/76845907785.pdfIn PDF document text
    • http://toyotacri.com/userfiles/files/tipudakafesufifi.pdfIn PDF document text
    • http://ac-kenigsberg.ru/files/file/25010353583.pdfIn PDF document text
    • http://sictombbi.fr/ckfinder/userfiles/files/malisik.pdfIn PDF document text
    • http://119hero.kr/userData/board/file/kelenivosufur.pdfIn PDF document text
    • https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/r4ngupat83861k0jsgi76urguo/95850005990.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eeca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEECA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000106e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106E1 10624 bytes
SHA-256: 74505931e29bd4736b606952c690ddefa927988940a2a5b277922c3efb676a82
font_02_sfnt_off00011f36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F36 19480 bytes
SHA-256: 4e2cc5ff658b6a2e2f37030159fb64ea648b4ed4dde10918e91daf1bbfe55e82

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