Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdadc856a12b11fe…

MALICIOUS

PDF

62.5 KB Created: 2021-06-27 13:27:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 132633ab043272b234fca0ec1241480e SHA-1: 39e4c975bb93a829e03a1ddbb2ce7ddc3793dc4e SHA-256: fdadc856a12b11febb2ccb1accbfe7481b0fa85b0efd85968466247bbaa3cfcb
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links pointing to compromised websites and disposable hosting, suggesting a phishing or malware distribution attempt. The presence of a URL with 'kmspico' in the utm_term parameter indicates a lure for software activation tools, a common tactic for distributing malware. ClamAV detection as 'Pdf.Phishing.Trojan' further supports the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6505

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 https://synerhu.ru/uplcv?utm_term=kmspico+for+windows+10+and+office+2016 PDF link annotation
    • http://akinmedikal.com/uploads/file/97905977180.pdfIn PDF document text
    • http://intrinhgia.com/admin/webroot/upload/image/files/34279490853.pdfIn PDF document text
    • https://orldoc.ch/wp-content/plugins/super-forms/uploads/php/files/jqf7nii2q71r7jk4meen819rm3/zukuleg.pdfIn PDF document text
    • http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/160d619da7ec10---jimufesovizewaxi.pdfIn PDF document text
    • https://popcouncilinstitute.org/wp-content/plugins/super-forms/uploads/php/files/a1f7bb21f8d879d7b95c6e3e2e1aa54d/60236388037.pdfIn PDF document text
    • http://nhs1966reunion.com/clients/1/1c/1ca8f1639ee69cd7806809ed3bcda9bb/File/95104174447.pdfIn PDF document text
    • https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/0tkekjvpkhvce31qk6i606m0fp/54569529093.pdfIn PDF document text
    • https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/0smmpq0182pip8dfb9dkmiocs2/94245883994.pdfIn PDF document text
    • http://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160beca267bfce---9150244803.pdfIn PDF document text
    • http://scheiden-maassluis.nl/uploads//file/27840743173.pdfIn PDF document text
    • https://angelsstaff.com/uploads/file/6774744464.pdfIn PDF document text
    • https://sieuviet.net/webroot/img/files/xulovunemage.pdfIn PDF document text
    • https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c98ac58f20---49402789867.pdfIn PDF document text
    • http://kimyasaldubeller.com/upload/ckfinder/files/jolezinura.pdfIn PDF document text
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2801a65552---23091435482.pdfIn PDF document text
    • http://www.sport-konyv.hu/userfiles/file/rewimagolitexopa.pdfIn PDF document text
    • http://msslink.ru/userfiles/files/jixasew.pdfIn PDF document text
    • https://morethancleaningservices.com/wp-content/plugins/super-forms/uploads/php/files/049fd870890b18b77eaf7bcd21523164/mexiwawazolobivezufumazi.pdfIn PDF document text
    • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/160ae657708e5f---mibolulide.pdfIn PDF document text
    • https://elitstroycraft.ru/source/file/segajar.pdfIn PDF document text
    • http://terapeutickemasaze.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1608c5f4926229---pofezifedodenusokozarav.pdfIn PDF document text

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