Malicious PDF — malware analysis report

Static analysis result for SHA-256 e15f88d5c22f9526…

MALICIOUS

PDF

60.9 KB Created: 2021-09-02 20:12:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: cb8d61b4e104feb7d619d80ebbb9e4a7 SHA-1: 9c248309a8f06c18d163659bc9456eba04ac3c82 SHA-256: e15f88d5c22f95264344d9c94a086ff1dc831f5f6c7517beacc48965f73be2ef
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories or disposable hosting, indicating a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution through these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9299

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://emilymillerlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/47493164306.pdf In PDF document text
    • http://atsrealtyvietnam.com/upload/files/xexezikusebivabivakos.pdfIn PDF document text
    • http://cokhihoaiduc.com/uploads/files/jerizakefaderelilisu.pdfIn PDF document text
    • http://delfosventures.eu/userfiles/files/vojefoxumedewemijidus.pdfIn PDF document text
    • http://www.christianhouseshare.com.au/ckfinder/userfiles/files/48438201588.pdfIn PDF document text
    • http://vmkmsz.hu/userfiles/file/zudufupudobek.pdfIn PDF document text
    • https://landi-bg.com/images/file/vejorovutomari.pdfIn PDF document text
    • http://uniroll.pl/user_images/file/11001613676.pdfIn PDF document text
    • https://euroroma-bg.org/files/file/giridakurumudulanifupifus.pdfIn PDF document text
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608835e300d63---segijalugukofajajejan.pdfIn PDF document text
    • http://ketoanantamhcm.com/uploads/files/tobikumeminosubifetuv.pdfIn PDF document text
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/be955411e721fbd924d82272a17f7a49/dojafijojuxexirakeraw.pdfIn PDF document text
    • http://bahtiyardishekimi.com/fckfiles/file/vosanisezowejem.pdfIn PDF document text
    • https://celovechurch.org/wp-content/plugins/super-forms/uploads/php/files/d44eeb37d77b7502ccd1d42b810125b4/ledebezafedi.pdfIn PDF document text
    • http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082567dca5ce---taxeduxajenewudopabivet.pdfIn PDF document text
    • http://bm-shower.com/userfiles/files/dasowex.pdfIn PDF document text
    • https://alexandrapanayotou.com/web/images/static/file/1459806674.pdfIn PDF document text
    • http://profisystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160752287519de---25185692404.pdfIn PDF document text
    • http://runningrhinelanderrabbitry.com/clients/875187/File/6134849973.pdfIn PDF document text
    • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/5dshf5q8bd5u1dpih3np47rqt7/70529715085.pdfIn PDF document text
    • http://dreiseengrundschule.de/files/99930105418.pdfIn PDF document text
    • https://irisapp.cn/uploadfiles/fckeditor/20210515/file/16210258392577.pdfIn PDF document text
    • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e25364df516---kesepew.pdfIn PDF document text
    • http://optykglowacki.pl/obrazki/files/konekeja.pdfIn PDF document text
    • https://lean-ds.com/upload/editor/file/60408481921.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=contoh+makalah+identitas+nasional+pdfPDF link annotation

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