Malicious PDF — malware analysis report

Static analysis result for SHA-256 96860cada7931e60…

MALICIOUS

PDF

79.0 KB Created: 2021-09-02 23:21:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 46b2d2d018ac3ee2b40db505d4219e54 SHA-1: f1ea2f396b7ff077fbafe74045c63a0081b3a492 SHA-256: 96860cada7931e609233634132babb1a9016f02a0506d48dd0e5621b1b4eaee8
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, many of which point to websites hosted on compromised CMS platforms or disposable hosting. This behavior is characteristic of a link farm designed to distribute malware or facilitate phishing attacks. The ClamAV detection further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4361

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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/746c59570fef4b494f592abc29fb7058/gixerusotofaf.pdf In PDF document text
    • http://pwmtqatar.net/userfiles/file/62192934710.pdfIn PDF document text
    • http://jdhs77.com/clients/58520/File/62900652850.pdfIn PDF document text
    • https://cal.lighting/wp-content/plugins/super-forms/uploads/php/files/6b26992db634c4bb37164bc14958ba73/safebodalidelixew.pdfIn PDF document text
    • http://maxidmum.com/images/upload/fck/file/90013009401.pdfIn PDF document text
    • https://clubforeducation.com/FCKeditor/userfiles/file/73852620069.pdfIn PDF document text
    • https://terminarz.online/kosmetyczka/krakow/files/bagagalon.pdfIn PDF document text
    • http://sad-azov.ru/wp-content/plugins/super-forms/uploads/php/files/c5f77af653e011b08040035378d9eb86/tunowesiwawibizez.pdfIn PDF document text
    • http://www.korayozelguvenlik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2d77ce26d2---3792995101.pdfIn PDF document text
    • http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089a79b1964b---lelorafumofariletesar.pdfIn PDF document text
    • https://12tiga.com/contents//files/20876914381.pdfIn PDF document text
    • http://matkinhantai.com/luutru/files/kozav.pdfIn PDF document text
    • https://accesoriosalmayor.com/images/userfiles/file/37978103114.pdfIn PDF document text
    • http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086fdafa0915---39076808590.pdfIn PDF document text
    • http://3gr-group-com.gbintl.com/ci/userfiles/files/20598821826.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16127727be881d---31521625713.pdfIn PDF document text
    • http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160e2ddd081a4e---mezenabi.pdfIn PDF document text
    • https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/nnfe8e562hbsrscg265sjpdalv/82588744888.pdfIn PDF document text
    • http://samuiluxurytravel.com/Uploads/file/winunuzowatodag.pdfIn PDF document text
    • https://iescolumbus.org/wp-content/plugins/super-forms/uploads/php/files/ab77ab9cd2ee95ce8ee70b7b550a6299/kamumosimuranokakulebo.pdfIn PDF document text
    • http://rfinshaat.az/userfiles/file/mikunotidudabipusizuvadon.pdfIn PDF document text
    • https://aydin-elektrik.com/resimler/files/vebufelolagiz.pdfIn PDF document text
    • http://webscape.co.bw/wp-content/plugins/formcraft/file-upload/server/content/files/1609fd9a0da59b---xavumisososu.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160926c28b1bf4---80358202787.pdfIn PDF document text
    • http://jyjwqj.com/uploadfile/file///2021061715560593.pdfIn PDF document text
    • https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160be48c17fbc8---35602412197.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=renault+logan+2008+manualPDF link annotation
    • 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_off0000dd5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD5E 18204 bytes
SHA-256: a9265c8a5452e5427b5622be18cadaf1da4847b5f7dbffc93335e50850eeaeec
font_01_sfnt_off00010ba5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BA5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000123bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123BC 10684 bytes
SHA-256: fcbe7aea02ef6622dcb6c5619ef10a45aa9fb9c2a867f7ad163dd8f1c417791f

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