Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eb0a7cd1a798880…

MALICIOUS

PDF

62.3 KB Created: 2021-09-25 06:03:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 00b544884f5a19afc97629c608a40148 SHA-1: d68d2fbbe93463d4756b37bbcfb88dae834eccef SHA-256: 0eb0a7cd1a798880aa7993577e45e57648ebb0f9c0dd928f4dd3d32dc6868397
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs pointing to various domains, suggesting a link farm designed to redirect users to potentially malicious content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically indicates a non-clustered link farm on disposable hosting, reinforcing the phishing or malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5364

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://krisoc.ru/uplcv?utm_term=300+seize+your+glory+download PDF link annotation
    • http://millecolori.it/images/file/sudutulilopefafobid.pdfIn PDF document text
    • http://khiconghoixuancong.com/Khicong/admin/userfiles/file/nubezemobasivijomiz.pdfIn PDF document text
    • https://harmony-lazienka.pl/Upload/file/57513815828.pdfIn PDF document text
    • https://icicle-mountaineering.ltd.uk/ckfinder/userfiles/files/kekonapug.pdfIn PDF document text
    • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/161460d4c472df---fixisowov.pdfIn PDF document text
    • http://maristaslardero.es/userfiles/file/13434586734.pdfIn PDF document text
    • https://mygoaltv.org/ipp/images/uploads/files/pifagezitigedafila.pdfIn PDF document text
    • http://ahknchem.com/upload/files/72378052335.pdfIn PDF document text
    • https://brincandoeaprendendo.com/fotosempresa/files/motosegevojebu.pdfIn PDF document text
    • http://klemanpince.hu/files/file/78568322412.pdfIn PDF document text
    • https://debcopharma.com/userfiles/file/44489690367.pdfIn PDF document text
    • https://portalkucharski.pl/app/webroot/media/files/mozepix.pdfIn PDF document text
    • http://kommunikator.nu/demo/userfiles/file///58803105658.pdfIn PDF document text
    • http://shosholoza.de/file/wewetuwisinimere.pdfIn PDF document text
    • http://qualityspices.in/ckuploads/files/vafikevezidebofibuteluluw.pdfIn PDF document text
    • http://silesiacapital.eu/data/file/resuk.pdfIn PDF document text
    • http://mariautonoleggiomarsala.it/userfiles/files/64414834584.pdfIn PDF document text
    • http://wcsps.com.tw/ckfinder/userfiles/files/53067987589.pdfIn PDF document text
    • https://costabravas.com/uploads/localidades/files/53401779178.pdfIn PDF document text
    • https://danfort.lv/userfiles/file/22962542957.pdfIn PDF document text
    • https://chptravel.ir/data/file/53260047409.pdfIn PDF document text
    • http://debseven.net/UserFiles/File/55455437491.pdfIn PDF document text
    • http://musorcentrum.hu/files/article/file/bumedofopofex.pdfIn PDF document text
    • http://hairfibers24.com/upload/file/ramuvoladozopijinamomafi.pdfIn PDF document text
    • https://mariellatriolo.it/public/file/nipuvotorewokufozes.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_off0000c44d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC44D 2128 bytes
SHA-256: 45fd20160753fcb570c50de99009296bf1a3b40a8a190baf136400c151df6cf5
font_01_sfnt_off0000cdeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDEB 10884 bytes
SHA-256: 4bbf502473e05d4ec7eb27521162bee1edc8ba955cd9e355dc493688a1fa8994

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