Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4b630d59b5953d6…

MALICIOUS

PDF

61.6 KB Created: 2021-07-26 18:13:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: e030e0b01b894996a40c7d080bd8c82c SHA-1: 83aa0e6398ddaec503fb3aa708b81b6a38913bd2 SHA-256: c4b630d59b5953d6e9ce95be3b478dc5b9e205f6cd92c0e0985ed35fe7aaa3c3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm pointing to multiple unknown PDF files hosted on various domains, some of which appear to be compromised CMS uploads. The presence of these links suggests an attempt to redirect the user to malicious content, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8871

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 http://wittzumstegfamilyreunion.com/clients/e/e5/e56c03c63d8c9260b12fda9e5e6a3df6/File/welapifezopejukebagojusuv.pdf In PDF document text
    • http://aldara-latinoamerica.com/userfiles/file/pudazibefirejifip.pdfIn PDF document text
    • http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/9ba2db9f94b05c8c8325014f2d7de062/japarakaxupenadokevikip.pdfIn PDF document text
    • http://honda-vo.com/upload/file/baxomaf.pdfIn PDF document text
    • https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160ba379f67f83---towowokipaza.pdfIn PDF document text
    • https://evergreencans.com/userfiles/file/rojetifaso.pdfIn PDF document text
    • http://jagodkaprzedszkole.pl/userfiles/file/78614986355.pdfIn PDF document text
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c482211a8ab---sipewidadof.pdfIn PDF document text
    • https://www.asahinadigital.com/wp-content/plugins/super-forms/uploads/php/files/bl8jfd561f9phhk689iqd0d215/29436687044.pdfIn PDF document text
    • https://freedomhypnosisnyc.com/wp-content/plugins/super-forms/uploads/php/files/9129a9f1ffc7647ce344b8d96f3cc4eb/80126050632.pdfIn PDF document text
    • https://kicksomeglass.comIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=what+are+the+negative+impact+of+globalization+in+africaPDF link annotation