Malicious PDF — malware analysis report

Static analysis result for SHA-256 74e0f59361005646…

MALICIOUS

PDF

74.8 KB Created: 2021-09-06 10:48:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 12c2abaedc18236986e0ed47299a21d6 SHA-1: c2b72975b758ba6ece529bccad97752000f7ee81 SHA-256: 74e0f5936100564610b9bdf429030e9e0b05d047c8a781320942ce101c40b4a2
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF identified by ClamAV as a phishing trojan. It contains numerous embedded URLs, many of which point to compromised WordPress installations, suggesting a link farm designed to redirect users to malicious sites. The presence of these links and the ClamAV detection strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4750

Heuristics 5

  • 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
  • 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 http://palyavalaszto.hu/teszt/upload/file/rebevogoxojifugum.pdf In PDF document text
    • https://www.kiakaha.gr/wp-content/plugins/super-forms/uploads/php/files/g1nutqldhnbgk42mh0rvi5fipp/xijiniv.pdfIn PDF document text
    • http://bochosushi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094f10e90860---fejeriwodebanug.pdfIn PDF document text
    • http://midiabyz.com/wp-content/plugins/super-forms/uploads/php/files/f345092bf87e00fce5adb3d571aeff4f/mivikumivatovatemutimup.pdfIn PDF document text
    • http://charivne.info/images/file/jogafazijex.pdfIn PDF document text
    • http://karlsbach.de/userfiles/files/79952385834.pdfIn PDF document text
    • http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/161257a377d659---xadod.pdfIn PDF document text
    • https://eldorado777.ro/upload/editor/file/tosopuviwonatodategesu.pdfIn PDF document text
    • https://www.elitelawnsolutions.co.uk/wp-content/plugins/super-forms/uploads/php/files/96tgpb0mfoibmimm25m6l8athm/60101101668.pdfIn PDF document text
    • http://aklond.com/UploadFilesfile///2021071002125818.pdfIn PDF document text
    • http://bjsprt.com/uploadfile/file///2021052300322979.pdfIn PDF document text
    • http://bdnchem.com/upload/files/15781455186.pdfIn PDF document text
    • https://condominiovillage.com/userfiles/file/96207781691.pdfIn PDF document text
    • https://sunsoftinfoway.net/ckfinder/userfiles/files/74196763464.pdfIn PDF document text
    • http://polishingmarblefloor.it/userfiles/files/35002533762.pdfIn PDF document text
    • http://zhhyhb.com/uploadfiles/files/20322932459.pdfIn PDF document text
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/307b481ff354529910fc019b0879ab91/siwoduza.pdfIn PDF document text
    • http://jessie.vn/images/ckeditor/files/kuvegerapow.pdfIn PDF document text
    • https://abrasco.org.br/ckfinder/userfiles/files/48059409753.pdfIn PDF document text
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082860793bd9---mukupup.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/iumrcq5rmms69koqoi1pdmqfts/84141305181.pdfIn PDF document text
    • http://alemotta.com/resources/original/file/49521911842.pdfIn PDF document text
    • https://ocbond.org/userfiles/files/18848668388.pdfIn PDF document text
    • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/fa315d48e7847104ff5751eecec28a9e/gilamedofutagawapumafabav.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=miniso+speaker+user+manualPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE371 17888 bytes
SHA-256: 8f163d7d29a52b62d4f3b47ed3e05915644b3372401a13a155d24e1005005612
font_01_sfnt_off00011211.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11211 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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