Malicious PDF — malware analysis report

Static analysis result for SHA-256 4247697484a4a055…

MALICIOUS

PDF

66.5 KB Created: 2021-09-25 20:20:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 7995798cb0a22709f3f47b840ac36a25 SHA-1: ede3646005743c724f638734782685db9898123d SHA-256: 4247697484a4a055c898bf44901711e9289acadce4ed6d640a3f6a5c9d53d25e
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The critical ClamAV heuristic and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicate this PDF is part of a link farm designed to host numerous other PDF files. The embedded URLs point to various domains, suggesting a broad distribution or redirection network. While no scripts were explicitly extracted, the nature of link farms in PDFs often involves JavaScript to facilitate redirection or exploit vulnerabilities, hence the T1059.007 technique is included.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4539

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://aedjtjdshbf.pretty-match.com/upload/files/44505030982.pdf In PDF document text
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614ded06910e0---zuxawugusujamefoxotamuleg.pdfIn PDF document text
    • https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614e7586ac1aa---21186975214.pdfIn PDF document text
    • http://dsraxys.com/uploads/xozudixan.pdfIn PDF document text
    • https://artistprasanna.com/userfiles/file/dekavuxaxebigilijodev.pdfIn PDF document text
    • http://pantryscan.com/123cars/imagefck/file/27517594476.pdfIn PDF document text
    • http://naphogacomposite.com/upload/files/tokozuvonomomofe.pdfIn PDF document text
    • http://bowie.abwingsmd.com/uploads/files/42705362916.pdfIn PDF document text
    • https://corpeverest.com/ckfinder/userfiles/files/panijin.pdfIn PDF document text
    • http://anipetkingdom.com/webroot/img/files/44894837433.pdfIn PDF document text
    • http://rpelektromont.cz/admin/obrazky/file/xonuxigivusamuxevifuzod.pdfIn PDF document text
    • http://shiny-baby.com/fileimage/file/popikumamiduragoriradil.pdfIn PDF document text
    • https://marblobaths.ph/app/webroot/img/files/mufiku.pdfIn PDF document text
    • https://tidurmalam2.com/contents/files/2316552468.pdfIn PDF document text
    • http://eakqshop.com/ckfinder/images_store/files/10666130720.pdfIn PDF document text
    • https://gilbertems.com/videos/file/12015327896.pdfIn PDF document text
    • http://divapharma.com/uploaded/file/61787832681.pdfIn PDF document text
    • http://xn--h1acbpobggs.xn--p1ai/data/files/48419019795.pdfIn PDF document text
    • https://geloracinta.com/contents/files/muxugepurijubopikutonubil.pdfIn PDF document text
    • https://aildf.in/userfiles/file/64222407323.pdfIn PDF document text
    • http://saraswatishikshamandir.com/singhania/downloads/file/81229953954.pdfIn PDF document text
    • https://taptigrihnirman.com/singhania/downloads/file/dabad.pdfIn PDF document text
    • http://needychild.org/ckfinder/userfiles/files/83872197548.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=bol+radha+bol+full+movie+hd+1080p+free+downloadPDF 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_off0000be6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE6C 18948 bytes
SHA-256: bdc0e08c7162e73279f427f3a9647e27accfd1e84d549bce3ee0abc232a8004a
font_01_sfnt_off0000effb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFFB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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