Malicious PDF — malware analysis report

Static analysis result for SHA-256 96c8fbfdb11ae478…

MALICIOUS

PDF

64.0 KB Created: 2021-09-15 17:46:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: ec609279710a5d076a636f5db90ffaae SHA-1: 0a84acfaf6e69c165989491f12a26af9acf5c5a6 SHA-256: 96c8fbfdb11ae478cbd38c745f3d435eeabc64bef09d5849f241799566b6aa9e
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6906

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 https://pixomot.ru/uplcv?utm_term=teachmint+app+free+download PDF link annotation
    • https://bnbtravels.com/ckfinder/userfiles/files/43958322021.pdfIn PDF document text
    • https://esprimagroup.com/userfiles/file/72682648663.pdfIn PDF document text
    • https://phatgiaolongan.com/upload/ckupload/files/61457462103.pdfIn PDF document text
    • http://realestatespoznan.com/uploads/53910068803.pdfIn PDF document text
    • http://weilandensemble.nl/ckfinder/userfiles/files/wigovu.pdfIn PDF document text
    • http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161339975a8f82---31343076524.pdfIn PDF document text
    • http://savaksangida.com/resimler/files/40152778625.pdfIn PDF document text
    • https://koltoztetes-szallitas-lomtalanitas.com/ckfinder/userfiles/files/takixebaminape.pdfIn PDF document text
    • http://diysmart.net/userfiles/file/57660001551.pdfIn PDF document text
    • http://lapmaymn.samdigroup.vn/app/webroot/upload/files/53792228273.pdfIn PDF document text
    • http://abwclayton.com/uploads/files/xamodexadiretifetite.pdfIn PDF document text
    • http://humanlitech.com/files/files/turis.pdfIn PDF document text
    • https://sukaunited4d.vip/contents/files/71683261605.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/16130034c42029---89346079356.pdfIn PDF document text
    • http://k3projekt.pl/uploads/userfiles/files/totunipezududo.pdfIn PDF document text
    • https://miguktour.com/FileData/ckfinder/files/20210904_2EDB77536191AA04.pdfIn PDF document text
    • https://worldtradezone.com/userfiles/file/gitenopumizisikop.pdfIn PDF document text
    • https://108pizza.pl/uploads/userfiles/files/60669901472.pdfIn PDF document text
    • http://gpba.ge/admin/ckeditor/ckfinder/userfiles/files/52151540433.pdfIn PDF document text
    • https://aihr-iadh.org/uploads/FCK_files/file/semukom.pdfIn PDF document text
    • https://lacgl.org/upload/editor/file/lawaginadipereno.pdfIn PDF document text
    • http://tamtamphat.com/upload/files/99940988028.pdfIn PDF document text
    • http://cbcom.eu/ressource/site-image/files/61445426211.pdfIn PDF document text
    • http://yujinpharma.com/upload/files/jugudavijiluxivaza.pdfIn PDF document text
    • 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_off0000db1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB1A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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