Malicious PDF — malware analysis report

Static analysis result for SHA-256 86d5177ecb700ac5…

MALICIOUS

PDF

40.1 KB Created: 2021-06-29 09:09:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: ccaf19fdfa9c657e757eac65e037a2e9 SHA-1: 84fc46af92de98b381b7751b4aeb829e679080d9 SHA-256: 86d5177ecb700ac535e8f4836dafb6d2ba28df456d9ca6ec34bfe307a70f6a66
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ClamAV and an ML classifier. It employs an image-only lure, typical of phishing, with embedded links pointing to various domains, many of which appear to be compromised WordPress sites. The document's structure and the presence of numerous external links suggest it's designed to redirect users to malicious content or facilitate further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9743

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 40 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://bbpcosmetics.com/admin/upFiles/2021-5/file/nifujarinuzefebufijalake.pdf In PDF document text
    • https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/03b785fce3bc332180ad86b8809a05cc/95924121240.pdfIn PDF document text
    • http://criminisiepartners.it/userfiles/files/1980178250.pdfIn PDF document text
    • https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/ac8582fedea565f329dc16ddfb4dd732/pevizipunasolugi.pdfIn PDF document text
    • http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608ab4083f649---gorofubop.pdfIn PDF document text
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa35bd16126---70124314483.pdfIn PDF document text
    • https://ltgtrends.com/wp-content/plugins/super-forms/uploads/php/files/397f4066ad0628388430464da084f248/kixazixusaz.pdfIn PDF document text
    • http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607692b5ea544---51279652399.pdfIn PDF document text
    • http://hesexpo.com/img/editor/image/file/89734196055.pdfIn PDF document text
    • https://www.pennlighting.com/wp-content/plugins/super-forms/uploads/php/files/ace6590d546fcb82885bb1b8e0b1f406/87983956075.pdfIn PDF document text
    • https://pinotcar.com/wp-content/plugins/super-forms/uploads/php/files/e74930414ace3b4b61a6dacdae0722c4/nakojagaripidepomewef.pdfIn PDF document text
    • https://personalloan2u.com/wp-content/plugins/super-forms/uploads/php/files/19a4a9a259e4fa4c7dcccd7b660f0712/12701958481.pdfIn PDF document text
    • https://agrachoff.ru/wp-content/plugins/super-forms/uploads/php/files/27629e06a26346f1dc32e6b42b8f09ac/luvamujuzogizuja.pdfIn PDF document text
    • https://vildmarksjagt.dk/userfiles/file/fobod.pdfIn PDF document text
    • https://torgradio.ru/new/files/file/fugirawekukijune.pdfIn PDF document text
    • http://4grd.com/cmsimages/file/jolokuku.pdfIn PDF document text
    • http://gz-theoutfit.com/UploadFiles/FCKeditor/20210628024539.pdfIn PDF document text
    • https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c5fbce36fc5---sidalobija.pdfIn PDF document text
    • http://allasclub.com/campannas/file/79596067518.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=application+of+second+order+differential+equation+in+electric+circuitPDF link annotation

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