Malicious PDF — malware analysis report

Static analysis result for SHA-256 107ed1b63b754c8f…

MALICIOUS

PDF

97.9 KB Created: 2021-06-17 23:28:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 4e9ac83f59ba36628ba02bcb61c51c48 SHA-1: 442f8b699cf80f78626ff3397832df8e1ad0004c SHA-256: 107ed1b63b754c8f45bb6bcc67239070d632a630b9da3b75f962d8cc69390282
154 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm, with multiple URLs pointing to compromised CMS uploads and disposable hosting. The document body contains text that appears to be a lure, possibly related to the URLs found.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7689

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://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/bd4421fae144b204c4f0cfcd94adf55e/21199166587.pdf In PDF document text
    • http://xn--l3cbpp3gh4a5g5c.com/userfiles/files/vopijudimibosuwupinizigot.pdfIn PDF document text
    • http://bochosushi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160739aef6661b---91495184271.pdfIn PDF document text
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a115e2cc03c---zodavikumaxovekikojubop.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/000ddc7afd838e6b7cca0c13249a14dd/16180191421.pdfIn PDF document text
    • https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6153759bb1---42082472639.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607d235d4dcd1---batisig.pdfIn PDF document text
    • https://www.ltgpartners.com/wp-content/plugins/super-forms/uploads/php/files/8aa58453a766920711fbad1216adecc2/fogimizeritosub.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607dc5d7e0ddf---98387011481.pdfIn PDF document text
    • https://samowar.me/userfiles/files/vafozelevolunoliwiguru.pdfIn PDF document text
    • http://www.expo-hotel.com/english/wp-content/plugins/formcraft/file-upload/server/content/files/160c2010e7e95d---zufofuf.pdfIn PDF document text
    • http://aiswaryamatrimonials.com/fck_uploads/file/54934428591.pdfIn PDF document text
    • http://sarljarry.fr/userfiles/file/97038844597.pdfIn PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c6dbe360078---81908719542.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=tera+yaar+defaulter+kaho+ya+kuch+bande+defaulter+takkar+gayePDF link annotation

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