Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5cac086d406063a…

MALICIOUS

PDF

71.0 KB Created: 2021-08-14 22:23:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 1d7ab09513265d5e80c7b51f6b95ee1d SHA-1: 52749415bbabb78738d5d869b02fd8fc6c7b0ffa SHA-256: d5cac086d406063a142e9a41cb61b6999a3e69a14a5d25ef126a9def8b5b5e1e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous external URIs and links to compromised WordPress upload storage, suggesting it functions as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the presence of multiple suspicious URLs points towards a potential download or redirection mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9321

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 https://drafthe.ru/uplcv?utm_term=real+steel+boxing+champions+hack+apk+ultima+version PDF link annotation
    • https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c69b9c74ec---44549046297.pdfIn PDF document text
    • https://goactive.hu/wp-content/plugins/super-forms/uploads/php/files/b7ab8d495c1c2dd51d102e5244ff4315/kolutuxe.pdfIn PDF document text
    • http://eko-inwest.eu/upload/file/88691161516.pdfIn PDF document text
    • https://samowar.ch/upload/file/zidoxulozevigodo.pdfIn PDF document text
    • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b53e41a437e---nawojagulituxos.pdfIn PDF document text
    • http://anhuicrew.com/upload_fck/file/2021-4-30/20210430153536502631.pdfIn PDF document text
    • https://alasclub.gr/neuro/ckfinder/userfiles/files/12042691219.pdfIn PDF document text
    • http://grupophi.es/uploads/files/mekumoman.pdfIn PDF document text
    • http://apluskleaning.com/admin/images/file/98479189906.pdfIn PDF document text
    • https://proff-doors.ru/wp-content/plugins/super-forms/uploads/php/files/7a75d8a72916bd813245b33ed24d12b7/xotofinovuzifuv.pdfIn PDF document text
    • http://immopolignano.lu/images/21863271888.pdfIn PDF document text
    • http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160b062bf6a0f8---linaxebugetuwagenuzi.pdfIn PDF document text
    • https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cd324208be---serezeg.pdfIn PDF document text
    • http://geyikkimya.com/userfiles/upload/file/53269190939.pdfIn PDF document text
    • http://sansboundaries.com/clients/f/fd/fde0d4b6b324343791c5f0705b221951/File/zajixovupimuwimolafibesa.pdfIn PDF document text
    • https://criteriacambio.com.br/wp-content/plugins/super-forms/uploads/php/files/lfj4atss6tunedo8r194aj1pmf/xodadafaxanuzifofox.pdfIn PDF document text
    • https://barrierball.cl/ckfinder/userfiles/files/52631746349.pdfIn PDF document text
    • http://zjqzzx.com/uploadfile/file/2021061117530173499.pdfIn PDF document text
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609295602d6f6---72805519709.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/84586379004.pdfIn PDF document text
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/160730b5d3c5c7---soxigedowugawupipejexituv.pdfIn PDF document text
    • http://www.alex-vasilkov.ru/images/wisdom/file/98245594771.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_off0000e472.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE472 17796 bytes
SHA-256: 46d23d2487c31e4d09178b41dc20c674c3a251c2beff9b7ae2b6116e0f498485

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