Malicious PDF — malware analysis report

Static analysis result for SHA-256 514e30cac92da58a…

MALICIOUS

PDF

63.5 KB Created: 2021-09-18 21:50:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: e45574eeb731aee98563e35eb52f27a6 SHA-1: 77fdac83a3201d171a9d8fe14a01827747163db3 SHA-256: 514e30cac92da58a947a4915cd0a98f0551affa2b6fab907b907d6d80fa5df4d
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a significant number of external URIs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to redirect users. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a malicious intent, likely phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4045

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://crysiq.ru/uplcv?utm_term=roald+dahl+the+giraffe+and+the+pelly+and+me+pdf PDF link annotation
    • http://canphantich.net/Images_upload/files/wutunega.pdfIn PDF document text
    • http://insei.eu/userfiles/files/zavogamulerib.pdfIn PDF document text
    • http://beamstraffic.ae/amb/userfiles/file/55148421121.pdfIn PDF document text
    • http://bright-inter.com/file_media/file_image/file/30395754922.pdfIn PDF document text
    • https://trickapotisk.cz/webpagebuilder/ckfinder/userfiles/files/75138990578.pdfIn PDF document text
    • http://strategie-online.net/catalogue_dynamique/file/gexivifaparolef.pdfIn PDF document text
    • http://www.immo-uno.com/ckfinder/userfiles/files/10515776051.pdfIn PDF document text
    • https://gelblighting.com/userfiles/files/fokigasedezuxe.pdfIn PDF document text
    • http://ginzaramen.us/uploads/files/16484663481.pdfIn PDF document text
    • http://chinajnbt.com/images/upload/File/luditikatoriwepiwapit.pdfIn PDF document text
    • http://kfnmsz.com/upfolder/e/files/20210914140540.pdfIn PDF document text
    • http://olsztyntransportmedyczny.pl/userfiles/file/faboriziv.pdfIn PDF document text
    • http://umrllc.com/userfiles/files/50596925388.pdfIn PDF document text
    • https://discovery99.com/userfiles/file/gatase.pdfIn PDF document text
    • https://bunian-co.com/other_files/File/zudabudimaripopel.pdfIn PDF document text
    • https://servicepapik.ro/files/sibofosutujino.pdfIn PDF document text
    • https://mvmdigital.gr/files/files/95374029041.pdfIn PDF document text
    • http://ff-engineering.com/userfiles/files/17986201062.pdfIn PDF document text
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/hf4f2li8fnjkiqcrvief2aji12/losoderaroturomowunali.pdfIn PDF document text
    • http://vitrine-prof.com/files/totatulufitufagasedusafe.pdfIn PDF document text
    • https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bd30b06290---99529291254.pdfIn PDF document text
    • http://lecostationery.com/files/file/29349435965.pdfIn PDF document text
    • https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/a53148c7f1638befc09914ce2b0ac046/pujotopaxogeji.pdfIn PDF document text
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16136ab3ef0ca5---tuzunov.pdfIn PDF document text
    • http://www.northern-japan.com/image/upload/File/xixufo.pdfIn PDF document text
    • http://labmansour.com/app/webroot/js/ckfinder/userfiles/files/54333446296.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bf65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF65 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d77c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD77C 10936 bytes
SHA-256: 6a6f44cda8192ff384235542b72de480247f546e376abd85965c169888f11793