Malicious PDF — malware analysis report

Static analysis result for SHA-256 be062e6dcb24b9f8…

MALICIOUS

PDF

109.2 KB Created: 2021-10-08 11:12:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: ed75459f8ec19f6beb1434c39b728ace SHA-1: 17fb52d9f6c782770e007fa6677116b4542a7dff SHA-256: be062e6dcb24b9f88e8b766b0c017d66a66aa6c9e6706a8be85391ed565dc43b
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was detected as malicious by ClamAV, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, containing numerous links to various domains, with a high probability of leading to phishing sites or further malware. The document body is heavily obfuscated and unreadable, providing no direct clues to its intent beyond what the heuristics suggest.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4798

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 http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/16147916b7cf86---1499731988.pdf In PDF document text
    • http://nabisori.com/userfiles/file/10245457096.pdfIn PDF document text
    • http://portaldeaquidauana.com.br/ckfinder/userfiles/files/pivufoxudetafiwepazotome.pdfIn PDF document text
    • https://k9-warrior.com/wp-content/plugins/super-forms/uploads/php/files/d7046grgt0pg7qdmg2u4ue0hv1/59971333217.pdfIn PDF document text
    • http://abwvictory.com/uploads/files/mimidifurinika.pdfIn PDF document text
    • https://ceccarmaramures.ro/userfiles/file/gixulafo.pdfIn PDF document text
    • http://eegbiofeedback-leszno.pl/userfiles/file/visupazewerobesaku.pdfIn PDF document text
    • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16130baaf1fb43---garikanej.pdfIn PDF document text
    • http://pathtojanna.com/userfiles/files/85638621542.pdfIn PDF document text
    • http://betonkeritesek.eu/Content/files/kigotutepazapizub.pdfIn PDF document text
    • http://www.catedralirodahaz.hu/data/editorfile/sazufozofuzukanomi.pdfIn PDF document text
    • http://nextgenship.net/upload/file/20210916163181433634.pdfIn PDF document text
    • http://chieusangducphat.com/uploads/userfiles/file/43193663284.pdfIn PDF document text
    • https://maintogelonline2.com/contents/files/15527355391.pdfIn PDF document text
    • http://share-world.tw/userfiles/file/tumafetelogijogawu.pdfIn PDF document text
    • http://smenergy.kr/uploaded/file/1297221627612f53824e5e5.pdfIn PDF document text
    • http://nanoservice.cz/upload/file/22535495776.pdfIn PDF document text
    • http://tranindo.com/Uploads/userfiles/files/togobupatukuza.pdfIn PDF document text
    • http://tiszaladany.hu/upload/file/darigapulikivuluwe.pdfIn PDF document text
    • http://buren-kompanie.de/userfiles/files/88494994519.pdfIn PDF document text
    • http://edilgroupdigiovanni.it/userfiles/files/lodifa.pdfIn PDF document text
    • http://sunnyten.net/userData/board/file/ridefajinidun.pdfIn PDF document text
    • http://alianzablue.com/aym_image/files/24831112458.pdfIn PDF document text
    • https://pmsp-me.com/userfiles/files/14129218037.pdfIn PDF document text
    • https://gegeny.hu/uploads/file/laxof.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=professional+sports+leaguesPDF 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_off00016aa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16AA2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000182b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x182B4 20472 bytes
SHA-256: be9fbdde7aade402e2300face4e0b2abd5b3ecbcee4279404973ee753bf57f11