Malicious PDF — malware analysis report

Static analysis result for SHA-256 9877294da14013af…

MALICIOUS

PDF

84.8 KB Created: 2021-07-15 23:37:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: 6ef47e6b8324aacd15dccecd29e40076 SHA-1: 1e3b89fc768683b43f1416adeb7bd18d29c2806a SHA-256: 9877294da14013af7d5982757ea523ca2414b96dce1c4674d0b8b642dccb9119
124 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV, specifically as a phishing trojan. Static analysis revealed it functions as a link farm, directing users to multiple compromised websites and disposable hosting. The presence of numerous external URIs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic indicate a strong intent to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3498

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://dallaslandscapedesign.com/media/files/18250264301.pdf In PDF document text
    • https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/p59c5prlank99vp6elnqojellt/74505698303.pdfIn PDF document text
    • https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160cc0cc519113---46705751924.pdfIn PDF document text
    • http://normandyclassof79stl.com/clients/e/e1/e16d7b8530e96d8d426d6b963c92b0b5/File/dabajedir.pdfIn PDF document text
    • http://pferdefreunde-brueckenhof.de/sites/default/files/userfiles/file/xesurudezovefuvibopedidu.pdfIn PDF document text
    • http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608cb3177af1e---mojuxepawawixaf.pdfIn PDF document text
    • http://msinziniering.com/userfiles/file/gukivuxinogif.pdfIn PDF document text
    • https://portsidestrategies.com/wp-content/plugins/super-forms/uploads/php/files/34da3f6bfcfd0f2eece658c23eadfe55/gorejerukuju.pdfIn PDF document text
    • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/160b3ea8ad59a4---mifemeravavobarezugamud.pdfIn PDF document text
    • https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/7b8c1c99cb68a53a60a0995a875ed006/sadel.pdfIn PDF document text
    • http://hrzservices.com/uploadfiles/file/92488150948.pdfIn PDF document text
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/09c572f9e00ba52cb9646acc71a00162/jepuxef.pdfIn PDF document text
    • http://herbwaterthailand.com/userfiles/files/vanoba.pdfIn PDF document text
    • http://jorkurojus.com/userfiles/file/pawowewig.pdfIn PDF document text
    • https://www.lightingsolutionsinc.net/wp-content/plugins/super-forms/uploads/php/files/8dacf1cc00c502d754e7bac2df3e1040/3927182352.pdfIn PDF document text
    • https://twr1115.net/files/fckeditor/file/bofuvinorelafa.pdfIn PDF document text
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/160808971dbeec---bivavesovelesiwedirobane.pdfIn PDF document text
    • http://zwickerfoto.hu/_user/file/dufelisolutazana.pdfIn PDF document text
    • https://ka-base.no/images_students/files/xupagugeloronokesi.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/f123a5eb653bccfc61870bdbf779fb1a/zepojugexufogefemanenomef.pdfIn PDF document text
    • https://matrainagycsalados.hu/userfiles/file/23720188865.pdfIn PDF document text
    • https://forex-robo.org/wp-content/plugins/super-forms/uploads/php/files/def740fc18359782e6d7a7431deb88d6/gapekiwik.pdfIn PDF document text
    • http://strahovka66.ru/userfiles/file/35110210605.pdfIn PDF document text
    • https://baileyelectrical.services/wp-content/plugins/super-forms/uploads/php/files/7fceeu7ummuu0urbqrnj1lvbdl/wumugogikulesavip.pdfIn PDF document text
    • https://www.azembay.com/wp-content/plugins/super-forms/uploads/php/files/3n3c54krnc94qugn3c9lrbis26/muvirewiwoboxi.pdfIn PDF document text
    • https://www.psalighting.com/wp-content/plugins/super-forms/uploads/php/files/6359c56a631220354c13ecbe797d92a3/84884748802.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=explain+stress+strain+curve+for+a+metallic+wirePDF link annotation

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