Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e4aa0a03b06129a…

MALICIOUS

PDF

70.3 KB Created: 2021-09-13 18:32:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 676d1d6c0e20fbfb32a019b39cdd5eab SHA-1: f7853120d1510b5fe62fbfa6b2fc38aebcf4de8c SHA-256: 7e4aa0a03b06129aeaf03bd7d62138f4025051f8a34d69084fc92e884ea472f3
154 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, and it contains numerous links to external resources. Several heuristics indicate that the PDF is a link farm pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to distribute further malicious content. The presence of multiple unknown URLs increases the likelihood of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9283

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16131276e3138c---busaguponepusasimuwig.pdf In PDF document text
    • http://bluebirdcanada.com/FileData/ckfinder/files/20210908_79C4F06F8A25CEE2.pdfIn PDF document text
    • https://waxparadise.pl/userfiles/file/77170730627.pdfIn PDF document text
    • http://marcelponjee.nl/ponjeefiles/file/suduru.pdfIn PDF document text
    • http://hcstonetw.com/uploads/files/202109011302553249.pdfIn PDF document text
    • http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/3ad8e0170d0a3829a36d31deff5e94d1/romabonazawujaxisi.pdfIn PDF document text
    • https://enerjimakine.com/tsrm1/img/userfiles/file/ronodamot.pdfIn PDF document text
    • http://digitalqwerty.com/ckfinder/userfiles/files/73203737333.pdfIn PDF document text
    • http://rollfactorytogo.com/uploads/files/romivukagimusepa.pdfIn PDF document text
    • http://cp-1.ru/userfiles/files/kegegiferarozod.pdfIn PDF document text
    • http://bilmatbasim.com/userfiles/file/8668492552.pdfIn PDF document text
    • http://chia4kids.ru/ckfinder/userfiles/files/fuganipenenolapijobije.pdfIn PDF document text
    • http://global-gypsum.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e6c57a60b7---18361855372.pdfIn PDF document text
    • http://vnationwide.com/userfiles/files/lufenifikelujijiraxotuful.pdfIn PDF document text
    • http://www.gulbaharsigorta.com/contentData/file/92151357924.pdfIn PDF document text
    • http://dakmoto.cz/obrazky/file/gabakaxigatob.pdfIn PDF document text
    • http://finara-v.com/file_media/file_image/file/vesemapozipafotalefo.pdfIn PDF document text
    • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/845a5a22168ba21a12082eb18520776b/katigiwakulabotexusup.pdfIn PDF document text
    • http://goghepcacloai.com/media/ftp/file/73268010898.pdfIn PDF document text
    • http://doudou.tw/userfiles/files/81361487442.pdfIn PDF document text
    • http://jumpstart.mobi/ckfinder/userfiles/files/xubobarogifodotofoso.pdfIn PDF document text
    • http://escuelasfutbol8.com/docs/files/76383806742.pdfIn PDF document text
    • http://metallpress.info/files/lurekiruto.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=lulubox+new+versionPDF 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_off0000db93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB93 10292 bytes
SHA-256: e6010a9fd80331a3f8437cb3845e9f641624e8e5a823843dd42da4f13d38d975
font_01_sfnt_off0000f2e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E5 17756 bytes
SHA-256: affed8bc9e5afe5e3b066ee076ad283d68fd435b8703689d549161bec9f1445d

Open this report in the interactive analyzer, or submit your own file for analysis.