Malicious PDF — malware analysis report

Static analysis result for SHA-256 75a2c52fe962c453…

MALICIOUS

PDF

41.3 KB Created: 2021-06-10 01:49:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 9a9a29636133c4915fe4c7eca4a625aa SHA-1: 3c58acc3c6a45fa7e406e6aa5172cb23612a8074 SHA-256: 75a2c52fe962c45331a827ab0cb22487331f0ed8c6e8702bbe45c5c5031fcb3d
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF is identified as a phishing lure due to its image-only content and embedded links. The document contains numerous URLs pointing to compromised websites and disposable hosting, suggesting an attempt to redirect users to malicious sites. The ClamAV detection and ML classifier further support its malicious nature, likely serving as a delivery mechanism for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8113

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 41 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://allytemp.ru/uplcv?utm_term=wordscapes+cheat+level+1110 PDF link annotation
    • https://drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607e04522f7d0---56464417038.pdfIn PDF document text
    • http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093f5bf583ef---xopozo.pdfIn PDF document text
    • http://pogservice.ru/userfiles/file/jogobafarujanamiwulos.pdfIn PDF document text
    • http://praguetransfer.com/files/file/sigero.pdfIn PDF document text
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2f90168c87---96860378002.pdfIn PDF document text
    • https://ambientltg.com/wp-content/plugins/super-forms/uploads/php/files/4f5b5339a6f0f23afbb86612b9c8a892/79403599134.pdfIn PDF document text
    • http://kibbkw.com/uploads/file/tarule.pdfIn PDF document text
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d8d810d897---womefiguzebojefuvesulimak.pdfIn PDF document text
    • http://jaatkinson.com/userimages/luzegap.pdfIn PDF document text
    • http://adabaskimerkezi.com/upload/file/56921561585.pdfIn PDF document text
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bab1c16c296---vonivegazexidikapip.pdfIn PDF document text
    • http://heibldr.hu/FCKfeltoltott/file/gojisapaz.pdfIn PDF document text
    • https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/11e7c04fc8ce4262411757fcf581b3f1/16375437384.pdfIn PDF document text
    • http://jrmhandling.nl/upload/file/fikurig.pdfIn PDF document text
    • https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/hlr6ebbq1lcuaca21l24nm3lu1/bujowokobuvomobovol.pdfIn PDF document text
    • http://penzionklara.cz/userfiles/file/gemagidakigularakokujexik.pdfIn PDF document text
    • https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/s1t1vitq4jt43fedsjkvo91fi2/sesojulajuminanexurudilej.pdfIn PDF document text

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