Malicious PDF — malware analysis report

Static analysis result for SHA-256 092649371a4eeae8…

MALICIOUS

PDF

82.0 KB Created: 2021-08-03 01:42:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: c9adb1b649aada8813cc11fc9d3cf234 SHA-1: 049d05315d7d5d9b4c398ac62845fed896029455 SHA-256: 092649371a4eeae8c508e425b3a566ac37fd7462522a1c39f83ee2405add024d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and ClamAV as malicious, with a high ML score. It contains numerous embedded URLs, many pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The presence of external URI indicators and link farm heuristics strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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://cructi.ru/uplcv?utm_term=legend+online+h%C4%B1zl%C4%B1+giri%C5%9F+indir+eski+s%C3%BCr%C3%BCm PDF link annotation
    • https://www.indee-r.fr/wp-content/plugins/super-forms/uploads/php/files/336860e18230bf7245c2fbfb51a8d97d/nasajim.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160830144b96f2---pepafasugez.pdfIn PDF document text
    • https://aldurra.ly/images-editeur/img/file/voradugojoxapedoban.pdfIn PDF document text
    • http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/srv17rh1oifkqcbr39717p07sb/90217268403.pdfIn PDF document text
    • http://architettosirocco.it/userfiles/files/fexusawejewisipigoleroku.pdfIn PDF document text
    • https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/271f7311514e9505d55d873a5a5ff810/9151479411.pdfIn PDF document text
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca41c22a6b---zopifil.pdfIn PDF document text
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/58bc300d14a51aaf8867ff4d470f1860/rixabetepilapeg.pdfIn PDF document text
    • http://svatba-emi.com/uploads/pages/files/lizofetomusuzapezimejopit.pdfIn PDF document text
    • https://alarrabnews.com/images/content/content/file/redagugelo.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608390e947e1e---zepivejokuwixutajobeb.pdfIn PDF document text
    • https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/7pn3q9ejcmbdjmvsnghrhafki5/birifujix.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/ec70b3d03da4b51915eb84980aed29f8/kunuwobepulaxakimugarog.pdfIn PDF document text
    • https://shen-su.eu/gfx/userfiles/files/kusofabefiredoziwosekuvo.pdfIn PDF document text
    • http://ulleungroadtour.com/FileData/ckfinder/files/20210716_9E91BE85F1376402.pdfIn PDF document text
    • http://gsprojekt.eu/userfiles/files/datulunixegubemo.pdfIn PDF document text
    • https://protradingindia.net/userfiles/file/29679860625.pdfIn PDF document text
    • http://agriturismolionsfarm.it/userfiles/files/91843805555.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/160d73dfa991f8---1045902732.pdfIn PDF document text
    • http://faurerom.com/userfiles/file/zarumi.pdfIn PDF document text
    • https://www.llgnjinc.com/wp-content/plugins/super-forms/uploads/php/files/feedcf17e7797413303cf60d39dc68d3/joxabebawekinipetik.pdfIn PDF document text
    • http://xn----8sbxab3abskk3a2j.xn--p1ai/media/file/2295867040.pdfIn PDF document text
    • https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/160739c96350ff---dezapibogisefuve.pdfIn PDF document text
    • https://phoenixknights.co.uk/wp-content/plugins/super-forms/uploads/php/files/593d8d7175c3b998075626ab36a11118/perotadevosax.pdfIn PDF document text
    • http://fipjp.com/userfiles/file/10136582663.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_off0000d825.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD825 11024 bytes
SHA-256: f1fb729ed015c0ba51036d38f6964e2d431ac5396dab0b59780f6acbdc488ca3
font_01_sfnt_off0000f0b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B1 18712 bytes
SHA-256: cccbb6e0fbfe769d8270f5ff84314ba159f80eccdeff6b0be9b580510040fdc8
font_02_sfnt_off00011e75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E75 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1