Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab07484798ffd02a…

MALICIOUS

PDF

77.4 KB Created: 2021-09-05 06:59:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 3a66770cc46567a289bfe4fc168abb26 SHA-1: 07122e9d9858eadee4ba0a9c2754aa8b857dc6c3 SHA-256: ab07484798ffd02af5f233b92a6a3f9daa1ad0cf25c7c291aef05fdd9689b492
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs, many of which point to potentially compromised or disposable hosting sites, indicating a link farm or phishing lure. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of techniques used to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9908

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://everestart.com/images/stories/file/xogemasevigirezifudefeko.pdf In PDF document text
    • http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/d95510a2105cc41cab849a2b87098730/wozabisitomezabaliwu.pdfIn PDF document text
    • https://hmradiatoriai.lt/images/files/rafisagaxurezupoke.pdfIn PDF document text
    • http://konsultacjenaukowe.eu/Upload/file/votagarat.pdfIn PDF document text
    • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/4c4llqkvgqjpemoja5ucd8q407/37792893310.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607872e34b756---xubegivin.pdfIn PDF document text
    • http://express-service-auto.fr/ckeditor/ckfinder/userfiles/files/86728513717.pdfIn PDF document text
    • http://euro520.net/userfiles/file/16251546961946135802.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d0d1ac69e0---13486869726.pdfIn PDF document text
    • https://doucetplasticsurgery.com/ckfinder/userfiles/files/5845875450.pdfIn PDF document text
    • https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cf2d4b99b9e---tuxaduperojixuwanoliwaru.pdfIn PDF document text
    • http://shinserviceodi.ru/wp-content/plugins/super-forms/uploads/php/files/784b76594918121572afd5025187ae40/xujajaxidifobonaxulinu.pdfIn PDF document text
    • https://avigailpekelman.com/sites/default/files/file/talotitanapumafoguvoxe.pdfIn PDF document text
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16092ce35aa486---nowezekixevusikefikovisep.pdfIn PDF document text
    • https://giolog.biz/images/bulk_images/files/golufajezoriwabejejaduw.pdfIn PDF document text
    • https://diedacorporation.net/freesiafiles/file/mimatujepivobef.pdfIn PDF document text
    • http://reelproductionshd.com/userfiles/file/tabulibo.pdfIn PDF document text
    • https://mangonebike.com/uploads/file/jamigofabonopuxubu.pdfIn PDF document text
    • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16096310926908---25596840493.pdfIn PDF document text
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9bcc3bf8c0---82111221817.pdfIn PDF document text
    • http://sql110.com/pic/dogotasatog.pdfIn PDF document text
    • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/160c12db5b3782---zazedoruxagaxozasugibeza.pdfIn PDF document text
    • http://paoladebenedetti.eu/userfiles/files/tikekekav.pdfIn PDF document text
    • http://gopherandsquirrelcontrol.com/admin/images/file/kipudomawimifavob.pdfIn PDF document text
    • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/1b17811a4116d7980ff457a2426c6eef/58063361073.pdfIn PDF document text
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/16074259caba5a---97497276762.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=cricket+tournament+entry+form+pdfPDF 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_off0000ca4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA4E 17144 bytes
SHA-256: b61755334868cbe985297c20025bf01c0740cb3255cf02e44bf2df5023d80b81
font_01_sfnt_off0000f60d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF60D 10904 bytes
SHA-256: 247b203d30ef5c386cf990b33b8f05524df555cd8cbba9f7659f3b3be32849bc
font_02_sfnt_off00010f5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F5E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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