Malicious PDF — malware analysis report

Static analysis result for SHA-256 d06b960022d48ba0…

MALICIOUS

PDF

50.1 KB Created: 2021-09-21 12:19:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 0b49fe02141591764fef8b0cd4832b68 SHA-1: d76540708ee6f44caace92969e5dd600a9e065da SHA-256: d06b960022d48ba02662d08d3b54f34e5fc42bfbc37e7531d7ca83b56dc866b7
162 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for executing malicious code within documents. The presence of numerous external URIs, many pointing to compromised CMS upload storage and acting as a link farm, strongly suggests an attempt to redirect users to malicious sites. The ClamAV detection and ML classifier further confirm its malicious nature, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5887

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://crewmak.ru/uplcv?utm_term=where+can+i+watch+borat PDF link annotation
    • https://keluargamimpi2.com/contents/files/forarapisufefebexokoxupud.pdfIn PDF document text
    • http://sportgalaktik.sk/userfiles/file/21593045504.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/ml35414o0c8mfqfq6pq3nd7ko2/95997140631.pdfIn PDF document text
    • https://klubkanine.com/home/klub/public_html/ckfinder/userfiles/files/1484016331.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614125ac35fd0---gugagita.pdfIn PDF document text
    • http://massageindex.nl/images/uploads/39896873477.pdfIn PDF document text
    • http://rama-sp.com/rama/webroot/js/ckfinder/userfiles/files/46763299299.pdfIn PDF document text
    • https://sbsoftware.ro/admin/userfiles/file/fataperefenesaboneb.pdfIn PDF document text
    • http://xn--hh0b97d8is16e.com/userData/board/file/tuxamava.pdfIn PDF document text
    • http://twtqedu.com/userData/ebizro_board/file/18243174749.pdfIn PDF document text
    • http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612eb472dd012---benilumulivuvolezuguruna.pdfIn PDF document text
    • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/1614005c826155---rikabepeguburomekiwotegi.pdfIn PDF document text
    • https://bodymason.com/user_uploads/files/zewetugakasodizebe.pdfIn PDF document text
    • https://sf-tfi-pgu.uz/wp-content/plugins/super-forms/uploads/php/files/a35a367983f91cb5d6b7614d339de895/poligepikasuxiz.pdfIn PDF document text
    • https://budapestpainter.hu/ckfinder/userfiles/files/tiratifasiranazebun.pdfIn PDF document text
    • https://karlholmbygg.se/UserFiles/files/20605370018.pdfIn PDF document text
    • https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/b8877a4877054200b554574aa103baac/vaviturozamilenifum.pdfIn PDF document text
    • https://namratalakhotia.com/userfiles/files/juzevavetexap.pdfIn PDF document text
    • https://tktravelkorea.com/FileData/ckfinder/files/20210920_563838B6A99A4588.pdfIn PDF document text
    • http://borneneskontor-landsforening.dk/userfiles/file/86554284375.pdfIn PDF document text
    • https://leuphuotcamap.com/uploads/image/files/53394472650.pdfIn PDF document text
    • https://rajatotogroup2.com/contents/files/xotupife.pdfIn PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614794d961df1---sabavogigusiz.pdfIn PDF document text
    • https://www.taxiserviceh24.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613dccd93ee2e---nutilulowidowulajupajami.pdfIn PDF document text
    • http://salman-group.com/userfiles/file/redinunamosexuzude.pdfIn PDF document text
    • https://www.artikel238.nl/emmwebbit/resources/ckfinder/userfiles/files/61837360741.pdfIn PDF document text
    • http://kfnmdg.com/upfolder/e/files/20210910191733.pdfIn PDF document text

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