Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f76d079f721a2ae…

MALICIOUS

PDF

69.3 KB Created: 2021-09-11 18:52:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02
MD5: 9e8b7bb3fe3352a0a8936caa5b38d7f5 SHA-1: a7fcf6a453070c05b8e546ce2d0a0bfeb36ecc03 SHA-256: 7f76d079f721a2ae145426fc2755bfa22ed30cd311e36a929cc44d5f5e7b8981
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 0.9135

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://cructi.ru/uplcv?utm_term=pindah+data+dari+android+ke+iphone PDF link annotation
    • http://massvt.sk/editor_uploads/system/files/penofunizibizigakoxid.pdfIn PDF document text
    • https://truongthanhco.vn/webroot/img/files/60029281107.pdfIn PDF document text
    • http://morard-mcf.fr/data/Files/73780855505.pdfIn PDF document text
    • http://tatvideo.ru/ckfinder/userfiles/files/84856891090.pdfIn PDF document text
    • http://thucphamchucnangmy.vn/uploads/files/18494449871.pdfIn PDF document text
    • http://fractinvest.com/uploads/file/23246725826.pdfIn PDF document text
    • https://nepaltrekkinginhimalaya.com/assets/userfiles/files/kalojagigibamevelogu.pdfIn PDF document text
    • https://coverline.ro/userfiles/file/xitubaxowaxepokeselo.pdfIn PDF document text
    • https://lanjutpt1.com/contents/files/fiditenegefokom.pdfIn PDF document text
    • https://xn--hjrnskadeakademien-mtb.se/userfiles/file/2964799490.pdfIn PDF document text
    • http://gddfboiler.com/uploads/files/nekusewodadiwo.pdfIn PDF document text
    • http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/2521326e83c4c31b5c55d3bf91cf6d0c/39878809360.pdfIn PDF document text
    • http://techsystem.gr/data/uploads/ckeditor/files/51298766888.pdfIn PDF document text
    • https://dovolena-jiznicechy.cz/uploads/durenu.pdfIn PDF document text
    • http://gospel-pour-100-voix.com/fichiers/newsletter/file/76841209356.pdfIn PDF document text
    • https://wct.goldcrownresort.com/magazine_files/files/96257012230.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16133dab20921c---26827476221.pdfIn PDF document text
    • https://yourownadviser.com/ckfinder/userfiles/files/ripewejifoxavogutaneber.pdfIn PDF document text
    • http://woodlander.sk/grafika/file/nujafetobomapulutofepo.pdfIn PDF document text
    • https://aspirecambodia-edu.org/userfiles/file/zopofiw.pdfIn PDF document text
    • https://baatco.com/ckfinder/userfiles/files/jetarubu.pdfIn PDF document text
    • http://cga82.com/admin/File/mefejotekatowexiselunoso.pdfIn PDF document text
    • http://topp.pl/_topp/file/goxuzarawagoxat.pdfIn PDF document text
    • http://thietbikhachsanvinhhung1.com/upload/files/kewazejegufatupeleti.pdfIn PDF document text
    • http://caudafotografia.com/userfiles/files/xilifuluxukuvisim.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_off0000e386.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE386 17176 bytes
SHA-256: 9bd5e9ba1f6568f1aa2c4e4b110b6407719b01f5d79d27b0cffe01449a587506

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