Malicious PDF — malware analysis report

Static analysis result for SHA-256 09226f82dd11b5f0…

MALICIOUS

PDF

77.6 KB Created: 2021-09-17 09:59:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: ea5c4e9690312db598e73a07d7bd59ec SHA-1: 2b9cc500210e91e0a747e607dd6586f04fd9697f SHA-256: 09226f82dd11b5f064ff377ca9a2d4d422523fab1805800d19f7979c0540ca7f
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a large number of external URIs, many of which are hosted on disposable domains. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the document is designed as a link farm, suggesting a phishing or malware distribution scheme. The embedded JavaScript likely facilitates the redirection to these malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7561

Heuristics 5

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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=led+19+inch+price+in+pakistan PDF link annotation
    • https://bancodevida.com/bancodevida/admin/images/image/file/9435450512.pdfIn PDF document text
    • https://sambelteri.com/contents/files/tovemoninotu.pdfIn PDF document text
    • http://760_709737661.mildmedia-dev.eu/uploads/userfiles/files/xexotekexovaduxerorilepe.pdfIn PDF document text
    • http://pc-driver.ru/userfiles/files/36896914823.pdfIn PDF document text
    • https://agape4u.org/userfiles/file/8478827213.pdfIn PDF document text
    • https://edenestates.com/ckfinder/userfiles/files/bivoxejakinokawimobon.pdfIn PDF document text
    • http://www.masozilina.sk/ckfinder/userfiles/files/97271996898.pdfIn PDF document text
    • http://yey.uw52.com/upload/files/sapinidulijak.pdfIn PDF document text
    • http://gyliver.ru/files/files/17006891251.pdfIn PDF document text
    • https://chung-pei.com/userfiles/file/56922479230.pdfIn PDF document text
    • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133f50f9212a---3849428754.pdfIn PDF document text
    • http://studiosantese.eu/userfiles/files/75499486343.pdfIn PDF document text
    • https://granitabrasive.com/editor_up/senifenulogapisale.pdfIn PDF document text
    • http://tiyuchangdi.com/upload_files/files/20210905_222009.pdfIn PDF document text
    • http://park-seversk.ru/other/js/ckfinder/userfiles/files/19812151125.pdfIn PDF document text
    • https://peltonfell.org.uk/ckfinder/userfiles/files/47211749045.pdfIn PDF document text
    • http://oguzlarotomatiksanziman.com/depo/sayfaresim/file/28857667457.pdfIn PDF document text
    • http://hamlineparkplaza.com/assets/amund/ckfinder/userfiles/files/piwadapopulafiza.pdfIn PDF document text
    • https://orangcar.com/app/webroot/upload/files/bipidow.pdfIn PDF document text
    • https://absoluteanytime.com/media_file/files/files/giwerovososolovulepoza.pdfIn PDF document text
    • https://turkeyinsurance.info/images/file/lufanuwanemimefopaxolog.pdfIn PDF document text
    • http://manhchenang.vn/webroot/img/files/85468573988.pdfIn PDF document text
    • http://sprostredkovanieuverov.sk/res/file/mizumapozinosusadozavi.pdfIn PDF document text
    • http://safiorida.dk/operatori/userfiles/file/vuriridebizemegevafo.pdfIn PDF document text
    • 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_off0000ee1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE1C 10712 bytes
SHA-256: 99162f7055f5a12f430071e98f47793123154f23cfdddb0b1aeec6edef4c7f5d
font_01_sfnt_off000106a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106A8 17688 bytes
SHA-256: 6ac8143c9b9b0f66fe84bb645312e8923474dda081c0d928e7bab8c39ca9b509