Malicious PDF — malware analysis report

Static analysis result for SHA-256 f67a536ae6824764…

MALICIOUS

PDF

63.8 KB Created: 2021-09-06 03:10:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: c09b2a87045fb11e0372c5bda9552fbf SHA-1: 3782bfa1171f23ada9352c2fb7a2ce7939bbca43 SHA-256: f67a536ae68247647757671bc9ec74bf2059eccfc5cacf2c31d5fe7f9084f7dc
154 Risk Score

Malware Insights

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

This PDF file functions as a link farm, directing users to multiple compromised websites. The presence of numerous links on disposable hosting and compromised CMS upload storage indicates a phishing or malware distribution attempt. ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7025

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://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/f3b3f746b96233b02435cfd51be42f70/zitokijusudemodeza.pdf In PDF document text
    • https://divanich96.ru/admin/ckfinder/userfiles/files/gupujowifenasomip.pdfIn PDF document text
    • https://cornwallstaffagency.com/userfiles/file/zurudanuvozo.pdfIn PDF document text
    • http://acutecardio.ru/sadm_files/bevolepakofikujaxuno.pdfIn PDF document text
    • https://maximatrimony.com/ckfinder/userfiles/files/55741010370.pdfIn PDF document text
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160eca127cef97---kowewagudijuni.pdfIn PDF document text
    • https://advantagelic.com/singhania/downloads/file/91809850953.pdfIn PDF document text
    • http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16074dbc0b5e2c---20708587819.pdfIn PDF document text
    • https://civilkontroll.hu/uploads/file/60034577937.pdfIn PDF document text
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608badd854150---55581158057.pdfIn PDF document text
    • http://auapp.ch/userfiles/files/wasozup.pdfIn PDF document text
    • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4c58da9ecc---11429678748.pdfIn PDF document text
    • https://utilitydiscount.com/wp-content/plugins/formcraft/file-upload/server/content/files/160780425ad454---virugotilovobepozexime.pdfIn PDF document text
    • https://felicityokolo.com/file/natesunewolulezilazezumi.pdfIn PDF document text
    • http://saltyfeelings.com/userfiles/file/kinapun.pdfIn PDF document text
    • http://sxhk365.com/uploads/file///bixupuzojigebi.pdfIn PDF document text
    • https://jagamimpi.net/contents/files/56906478163.pdfIn PDF document text
    • https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/eac4540a92ad7285f0ae71747dde93d4/linavobakixafolu.pdfIn PDF document text
    • http://nashcentralfalcon.com/clients/d/d5/d5bea9c86035def548a020f7371d19fe/File/niseduvezobesijobokerele.pdfIn PDF document text
    • http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160a15798194f5---12373808576.pdfIn PDF document text
    • http://eco-versute.com/app/webroot/ckfinder/userfiles/files/44026278350.pdfIn PDF document text
    • https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/kk57idli9hevo7ieuah027dtke/99524732748.pdfIn PDF document text
    • https://elpollopaulino.com/cenavarra_userfiles/files/4023090649.pdfIn PDF document text
    • http://aquaclub.hu/userfiles/file/93800518204.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=control+valve+sizing+calculation+example+pdfPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD757 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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