Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea63343096554682…

MALICIOUS

PDF

62.3 KB Created: 2021-09-22 15:26:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 148a2b9238319213af68686136e4f825 SHA-1: a24d884831696a9b596dd088068f4932f640fdf2 SHA-256: ea63343096554682005040cdc36731a5186c0e9e862b2eefadc65e2f3f27859b
124 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which are associated with link farms and disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The file's structure and numerous external links point towards a tactic of directing users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9122

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://cructi.ru/uplcv?utm_term=cracked+mx+player PDF link annotation
    • https://smgbid.com/ckfinder_userfiles/files/xukila.pdfIn PDF document text
    • http://mpwlawpa.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/48870983285.pdfIn PDF document text
    • http://babijie.com/upload_fck/file/2021-9-13/20210913171611819674.pdfIn PDF document text
    • https://artlabjo.com/userfiles/file/dizigumez.pdfIn PDF document text
    • http://powercleanperu.com/cms_powerclean_2015/sgi_userfiles/userfiles/files/xunapawamagi.pdfIn PDF document text
    • http://yokohama-model.com/userfiles/files/vebijos.pdfIn PDF document text
    • http://namhungholdings.com/uploads/ckfinder/files/92718243723.pdfIn PDF document text
    • https://quanticabtl.com/cms_2018_quantica/sgi_userfiles/userfiles/files/tedajitopavalap.pdfIn PDF document text
    • http://studiobaldizzone.com/userfiles/files/75114857873.pdfIn PDF document text
    • http://geopraxis.it/userfiles/files/8480140482.pdfIn PDF document text
    • http://deborahmayerlawoffices.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/nipuboletaxe.pdfIn PDF document text
    • https://cashcruis.ru/wp-content/plugins/super-forms/uploads/php/files/9cace0548151039f558e7df1d020645d/66688002016.pdfIn PDF document text
    • https://daulte.ch/ckfinder/userfiles/files/29213244144.pdfIn PDF document text
    • http://hoangnampte.vn/quangbasanpham/app/webroot/upload/image/files/6957800403.pdfIn PDF document text
    • http://poorclarescork.ie/images/kewapiluxuxevu.pdfIn PDF document text
    • http://parilka.by/var/upload/file/nuretuwunove.pdfIn PDF document text
    • http://psychologyforeverybody.com/ckfinder/userfiles/files/zodawazokejoj.pdfIn PDF document text
    • http://bkm-market.net/userfiles/file/50991088553.pdfIn PDF document text
    • https://datxeninhbinh.com/data/dulieu/files/40997232703.pdfIn PDF document text
    • http://dycelife.com/userfiles/file/jaforijupurudukejew.pdfIn PDF document text
    • http://ergo-logo-bamberg.de/userfiles/file/mumitaramajimenibeselefaz.pdfIn PDF document text
    • http://www.naraihillgolf.com/admin/userfiles/file/sinavabasunugupexunozu.pdfIn PDF document text
    • http://humanlitech.com/files/files/vojizulejavojevusunij.pdfIn PDF document text
    • http://www.tsahimmongol.com/uploads/images/files/tutosu.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c632.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC632 10432 bytes
SHA-256: 89e5b510ddbe7b6d056393be56c671c7f2b2050c12afd3d102b819b96e8d9597

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