Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f7806884e164b7b…

MALICIOUS

PDF

101.5 KB Created: 2021-09-02 16:56:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 7972264a3846a7296e8907b027569bd0 SHA-1: b0e2314f339ce1260058a7a9cb8e398534010953 SHA-256: 7f7806884e164b7bca35cb01ce9b44b1cdbf3a318eaa088920d3e0a3f785bcee
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with a 'Pdf.Phishing.Trojan' signature. Static analysis reveals it functions as a link farm, containing numerous URLs pointing to compromised WordPress sites. These sites are likely used to host phishing content or distribute further malware. The presence of external URIs and link farms on disposable hosting indicates a malicious intent to redirect users to potentially harmful destinations.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4143

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://www.gsccn.it/wp-content/plugins/formcraft/file-upload/server/content/files/160945c1c498db---pegivafokapamopot.pdf In PDF document text
    • https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/0d9f0b47315a2191e8408b94e46c25eb/mikipavujipaxelan.pdfIn PDF document text
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/3737d2750cf7d40b2e56a4c5dd7dfc9f/44003231772.pdfIn PDF document text
    • http://studioarchperissinotto.eu/userfiles/files/tesenanujepoditirelotebuf.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ed364de147---26816822783.pdfIn PDF document text
    • http://www.deco-interieure.com/userfiles/file/xavufawenojarebigan.pdfIn PDF document text
    • http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/41ed2b9d14556295bd216419e4df6aa1/karigedajajoga.pdfIn PDF document text
    • http://hubbardfamilycircle.com/clients/62940/File/dowexutijebuve.pdfIn PDF document text
    • http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5cf5955148---43506703200.pdfIn PDF document text
    • https://remoteyourstaff.com/calisma2/files/uploads/watukidaludikenapeselob.pdfIn PDF document text
    • http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16123630053e8c---parelizogu.pdfIn PDF document text
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/4sh629ae8fu2cp8rumj4v9dno6/peweweruwekakukinar.pdfIn PDF document text
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/8131c1ac194d53fd9fd16cde98dbc424/wefetimomuvinilepaxeb.pdfIn PDF document text
    • http://livelyway.com/ckfinder/userfiles/files/284306176.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/fc4d03f4206f6f00c0da205b5bb36c4c/95609569722.pdfIn PDF document text
    • http://gelateriacool.it/userfiles/files/53034647268.pdfIn PDF document text
    • http://xn--aknmedcal-wpbe.com/uploads/file/85119050680.pdfIn PDF document text
    • http://bluelakehomestay.com/uploads/image/files/35845550307.pdfIn PDF document text
    • http://kedehg.com/ckfinder/userfiles/files/rofaro.pdfIn PDF document text
    • https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/72fef8fcffff3b3b24f20e1dd1bdaa69/gataxupos.pdfIn PDF document text
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16081ea1876a07---17074412641.pdfIn PDF document text
    • https://majorsagilekvaros.hu/uploads/file/tuluki.pdfIn PDF document text
    • http://akinmedical.com/uploads/file/desukepulupisawolabiwovab.pdfIn PDF document text
    • http://saigondome.com/uploads/userfiles/file/fitukofijimoxuzeguwajafef.pdfIn PDF document text
    • http://gonzagafood.com/userfiles/files/xafulezetakanav.pdfIn PDF document text
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608817c627374---salexejederumililipeso.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=saps+internship+2019+application+form+pdfPDF link annotation

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