Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea7a34d85b825432…

MALICIOUS

PDF

62.3 KB Created: 2021-09-11 04:43:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: a1a1f6b719c877c4c06f3f4823462528 SHA-1: d54c5182a4be5602abab6afd9fd532060ade9630 SHA-256: ea7a34d85b8254323f174976aa0191b407b3901af27b5ae57f415752200e5a01
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to disposable domains and form a link farm. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates this is a common tactic for distributing malicious content or phishing pages. Although no scripts were explicitly extracted, the presence of embedded URLs and the ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggest a malicious intent to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5680

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://halongbaycruises.org/upload/files/meluvamilugabe.pdf In PDF document text
    • http://platcometals.com/images/file/67407416130.pdfIn PDF document text
    • http://kbchina.de/upload/zijasi.pdfIn PDF document text
    • https://vidaleve.net/ckfinder/userfiles/files/gikeda.pdfIn PDF document text
    • https://podereilmontaleo.it/writable/public/userfiles/file/36850238939.pdfIn PDF document text
    • http://www.madiran-cruduparadis.fr/ckfinder/userfiles/files/xirukokujepewoket.pdfIn PDF document text
    • http://tanphatinst.com/vietkiendo/upload/file/muvoduro.pdfIn PDF document text
    • https://kham.vn/userfiles/file/bexoletujokib.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/lobuxose.pdfIn PDF document text
    • http://healthywithhart.com/res/file/wuzibigozowometap.pdfIn PDF document text
    • http://nhasachconggiao.com/luutru/files/70073452656.pdfIn PDF document text
    • https://univerosg.com/ckfinder/userfiles/files/6060731498.pdfIn PDF document text
    • https://brianhigbielaw.com/UserFiles/file/momubulonizoz.pdfIn PDF document text
    • http://polletnv.be/uploads/files/72124789279.pdfIn PDF document text
    • http://taiwan-tsai.com/upload/files/bagibifigiz.pdfIn PDF document text
    • http://pogologistics.com/ckfinder/userfiles/files/vuxazanepopixoze.pdfIn PDF document text
    • http://metalzilemboeventi.com/userfiles/files/73879022842.pdfIn PDF document text
    • https://specialgarden.ro/userfiles/file/lokumalato.pdfIn PDF document text
    • http://iwayman.com/uploadfiles/file/210908064627640826bd16ft.pdfIn PDF document text
    • http://architettipassarinmarzotto.com/userfiles/files/kagazajuk.pdfIn PDF document text
    • http://jgweld18.com/UploadFile/file/20210910143456706.pdfIn PDF document text
    • https://www.mnogotrop.com/ckfinder/userfiles/files/73858911958.pdfIn PDF document text
    • http://fuyu.010bi.com/ckfinder/userfiles/files/nisesoxupunofasojixix.pdfIn PDF document text
    • http://el-master.ru/userfiles/file/pujuwexowanejuj.pdfIn PDF document text
    • http://www.lalorraineperdue.com/documents/55498293004.pdfIn PDF document text
    • http://novena99.com/uploads/files/202109031049299671.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=gta+v+online+cash+cheatPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d7a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7A1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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