Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae9084e72a01efc4…

MALICIOUS

PDF

77.6 KB Created: 2021-09-16 05:59:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: bae3c54c8a7e13445f97a3f90bc9cd41 SHA-1: f58d12582fd012b4e2b24019770a0d348d713923 SHA-256: ae9084e72a01efc429e8b1db65cefc79d53aa14fb3f5d77e782610f6373ff002
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ClamAV heuristic identified this PDF as a phishing trojan. Multiple embedded URLs, including one pointing to 'pixomot.ru', suggest redirection to malicious sites. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the PDF is part of a link farm hosted on disposable domains, further supporting a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4212

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=how+to+make+a+new+email+account+on+your+phone PDF link annotation
    • https://hnhaa.com/userfiles/tnejp/files/pimomuweka.pdfIn PDF document text
    • http://bogaarchitetti.it/userfiles/files/dukubakadivebosapati.pdfIn PDF document text
    • http://alisawedding.com/upload/users/files/dirani.pdfIn PDF document text
    • http://xn--42-jlclgg6a3e.xn--p1ai/userfiles/file/75545925893.pdfIn PDF document text
    • http://z-i-f.ru/userfiles/file/luraxuxewofijeliluni.pdfIn PDF document text
    • http://nutrizionisti.eu/public/thread/risorse/file/29710539199.pdfIn PDF document text
    • http://nakloboucku.cz/uploaded/file/78248562811.pdfIn PDF document text
    • http://karimeh.com/public/userfiles/file/tenotebototakude.pdfIn PDF document text
    • http://dansungsala.com/uploads/files/19298717338.pdfIn PDF document text
    • http://ossokahve.com/upload/file/60138281100.pdfIn PDF document text
    • https://finliz.lt/i/File/vodezoxiris.pdfIn PDF document text
    • https://djecijagarderoba.me/userfiles/file/kowikajisutuxipa.pdfIn PDF document text
    • http://maslatalaia.com/userfiles/file/weliguxebiwigagopifixavi.pdfIn PDF document text
    • http://ngocphuocjsc.com/public/default/ckeditor/files/25939857888.pdfIn PDF document text
    • https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1613a2e78c8df5---kipuk.pdfIn PDF document text
    • http://mylodge-naoshima.com/images/blog/file/vixujokusagiwaz.pdfIn PDF document text
    • http://proximeo.com/ckfinder/userfiles/files/kidebotilese.pdfIn PDF document text
    • http://solyaris.pro/admin/ckfinder/userfiles/files/zajajogida.pdfIn PDF document text
    • http://hbaoge.com/upload/files/65090983707.pdfIn PDF document text
    • https://bunian-co.com/other_files/File/82059821640.pdfIn PDF document text
    • https://ocw.tw/uploads/files/nobukofobabupit.pdfIn PDF document text
    • http://metrocars.london/survey/userfiles/files/tikalexoxavuzuxodokitu.pdfIn PDF document text
    • https://www.wikiwebagency.it/wp-content/plugins/super-forms/uploads/php/files/7a3995ee0f985b181ead030ff6a01227/kizamil.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dad0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAD0 10852 bytes
SHA-256: ea4f29f928463dadc96190eea44dfc72e3defc50a47c535260c13a2a4a21f9a2
font_01_sfnt_off0000f3ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3AC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010bbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BBE 17644 bytes
SHA-256: c69cc5fc2d767cb95d9a9e3ca741ba1013f31152af26eda3d78b38f6ad6d7e90

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