Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f6730df6c561e2d…

MALICIOUS

PDF

54.6 KB Created: 2021-09-14 06:53:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: ceddd66de87bc3c034f5d8e59ce93eea SHA-1: c0d01a0c8faacc86266253ea42ffe23ee3bebc3e SHA-256: 6f6730df6c561e2de46c1d22c7c7f2ba18640aa1bf52d7ccd8224c5027861c64
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to disposable hosting or compromised CMS upload directories, indicative of a link farm used for phishing or malware distribution. The ClamAV detection and ML classifier further support its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to lure users to external malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5715

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 http://vaynhe.com/upload/files/betopegavovasabexazurof.pdf In PDF document text
    • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/16130775e8e14f---biporidatome.pdfIn PDF document text
    • https://abcelectricalonlineshop.brilliantwebtech.com/userfiles/files/nureralusodoxatiraw.pdfIn PDF document text
    • http://maility.pl/_ADRESuserfiles/file/suxusuxokadagabofufupeked.pdfIn PDF document text
    • http://doktor-okonski.pl/uploadimg/file/xerosupebopin.pdfIn PDF document text
    • https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/vj1858h8akheg9cd12a7ikadkp/pasufamivanifux.pdfIn PDF document text
    • http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16132e9933649f---86712198706.pdfIn PDF document text
    • http://www.lnk-creation.fr/upload/file/92669552644.pdfIn PDF document text
    • http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612e9b9b8c40d---tojukabobafune.pdfIn PDF document text
    • http://olech-rzeszow.pl/userfiles/file/wabenozoxovanaxor.pdfIn PDF document text
    • http://opalbiosciences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613357e35bba3---24633368117.pdfIn PDF document text
    • http://vntattoosupply.net/uploads/image/files/46202519210.pdfIn PDF document text
    • https://ww150007.linebot.net/upfile/files/20210907091015.pdfIn PDF document text
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613362f9eb2d0---31932818763.pdfIn PDF document text
    • http://rootbeadmill.com/upload_fck/file/2021-9-13/20210913185531719363.pdfIn PDF document text
    • http://farashimirooz.com/files/sufitodizuxibumugimopi.pdfIn PDF document text
    • https://kaparatt.com/images/File/26945356097.pdfIn PDF document text
    • http://phongkhamthienhoa.vn/images/files/44547798500.pdfIn PDF document text
    • https://ripedzn.com/app/webroot/files/fckeditor/file/sazeweribolagigitoju.pdfIn PDF document text
    • https://tonymusic.se/UserFiles/files/kurogukewogewesinuzumum.pdfIn PDF document text
    • http://clubmaniacr.com/campannas/file/78482601436.pdfIn PDF document text
    • https://vcvscr.cz/www/www/fckphotos/file/tusoposupeza.pdfIn PDF document text
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f512f69028---81690997217.pdfIn PDF document text
    • https://nasikampung.info/contents/files/22899215477.pdfIn PDF document text
    • http://udokutscher.de/gfx/userfiles/files/17490056208.pdfIn PDF document text
    • https://pmcp-avac.com/files/upload-ckfinder/files/23191814420.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=tv+one+on+firestick+2020PDF link annotation

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