Malicious PDF — malware analysis report

Static analysis result for SHA-256 b924e75123ba5daa…

MALICIOUS

PDF

65.1 KB Created: 2021-10-07 05:05:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 0d43eebb45b782c9b653c4b35ecadf7e SHA-1: 1e724a0c5b8300205728cb578964d3f6eb5f6e1e SHA-256: b924e75123ba5daa4da1bd3b1875d20067569f98935571ad8a75df846780a531
124 Risk Score

Malware Insights

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

The PDF file was detected as a phishing trojan by ClamAV. Static analysis revealed it functions as a link farm, containing numerous URLs pointing to various domains, many of which are hosted on compromised CMS uploads. The primary purpose appears to be redirecting users to external sites, likely for malicious activities such as phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4829

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://floraplant.gr/FCKeditor/userimages/file/webelumegefuz.pdf In PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/161319a6b9a84f---faxobefubizekumo.pdfIn PDF document text
    • http://bonfiremadigan.com/uploads/fckeditor/file/73677571763.pdfIn PDF document text
    • http://ukrfirework.com/images/file/waxulibu.pdfIn PDF document text
    • http://musikpark-live.de/userfiles/file/lumorenipesarewigumexudon.pdfIn PDF document text
    • http://tdybio.com/uploadfile/file///2021100509212198.pdfIn PDF document text
    • http://himalayakebab.com/shipinc/userfiles/files/37994361445.pdfIn PDF document text
    • http://aranysolyomfeszke.hu/editor_up/77254581981.pdfIn PDF document text
    • http://adatarimhayvancilik.com/Images/Media/files/74330374581.pdfIn PDF document text
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/e11af7632fa26dbace70afa2e1db8377/81270107118.pdfIn PDF document text
    • http://xn--o79av69abka850ab6c.com/upload/file/202109020013040061.pdfIn PDF document text
    • http://reklama-v-sochi.com/ckfinder/userfiles/files/49148816252.pdfIn PDF document text
    • http://stefani.cz/fck/file/wunuvorujizosotajufufi.pdfIn PDF document text
    • http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1614109ecba4d9---gezalebevoxidipuzix.pdfIn PDF document text
    • http://teusz.pl/UserFiles/file/41230663670.pdfIn PDF document text
    • http://ultraljud.nu/bild/files/46354674306.pdfIn PDF document text
    • http://madveras.com/ckfinder/userfiles/files/22395455610.pdfIn PDF document text
    • https://wscnaturalhealings.com/wp-content/plugins/super-forms/uploads/php/files/28a587e63325d48e288c6df34e9f70cb/83176736554.pdfIn PDF document text
    • https://bostaninsaat.com/image/files/gozebejodotudubafakures.pdfIn PDF document text
    • http://artdental.hu/editor_up/jezugiju.pdfIn PDF document text
    • http://firegallery.ru/img/upload/80620190663.pdfIn PDF document text
    • http://villaelen.it/userfiles/files/jukeleze.pdfIn PDF document text
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/1615c6bed12bcb---30709166193.pdfIn PDF document text
    • https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files/31697647720.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=search+multiple+pdf+documentsPDF link annotation

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