Malicious PDF — malware analysis report

Static analysis result for SHA-256 97f6af0d8f84b932…

MALICIOUS

PDF

56.7 KB Created: 2021-07-10 12:51:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 993b3727254dce6a6773c7738031c987 SHA-1: 9796f7fca0da7455c1beb118afe8559137fda88c SHA-256: 97f6af0d8f84b932b4ea743e7a64603a38dbe8377986c0057cf4030a0b3f7bcb
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm with 26 distinct URLs, many pointing to compromised CMS upload storage, suggesting an attempt to distribute malicious files. The ClamAV detection and ML classifier further indicate malicious intent. Although no scripts were extracted, the structure and URL patterns are consistent with phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5222

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://panziofabian.hu/fck_kepek/11028167464.pdf In PDF document text
    • http://huefpdf.org/upload/file/37032065101.pdfIn PDF document text
    • http://alphabodysupplements.com/newerac2c/userfiles/file/zidozegarofumikosogefatux.pdfIn PDF document text
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cb99e94311b---kekokamekefej.pdfIn PDF document text
    • https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/9fa1f0fc43d72026332ae6df16e4fcc4/80754253714.pdfIn PDF document text
    • https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/f028c6aeaabdfab6df86b4c49bbd81db/87759618479.pdfIn PDF document text
    • http://paradisetourkorea.com/FileData/ckfinder/files/20210621_5CBC97AC4F7ABA2E.pdfIn PDF document text
    • http://brighterhealthcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/ikbppcv1tmh213rcvtel26h8pd/vorexofizagunatujobefot.pdfIn PDF document text
    • http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0e9afd043e---binatoteziwere.pdfIn PDF document text
    • http://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a7df4413f7d---80058903459.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c68a9860b9---33710785716.pdfIn PDF document text
    • http://bakoca.hu/files/file/kejowop.pdfIn PDF document text
    • https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078dada4452b---fatodabavusik.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607b15c74994f---metirozurepimulozizare.pdfIn PDF document text
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/16076c21472b0c---91914859146.pdfIn PDF document text
    • https://ubranni.com/uploader/files/gewibixirasulixaganusun.pdfIn PDF document text
    • http://shethof.ch/cgi-bin/dynamisch/file/37585748782.pdfIn PDF document text
    • https://recapress.com/ckfinder/userfiles/files/69348217460.pdfIn PDF document text
    • http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/agioh2ii7a6d13h6amr2a4v5p2/rivisutarilog.pdfIn PDF document text
    • http://barudan.hk/UploadFile/file/20210613062754418.pdfIn PDF document text
    • http://vieclamtaichinh68.com/upload/files/dufukabosolubujurigun.pdfIn PDF document text
    • https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/0pb7r0n5m7fhj5du6c8all1h1m/pibadowanudijowumigopevi.pdfIn PDF document text
    • https://marosme.ro/hirek/file/basemudotexinebugosakigij.pdfIn PDF document text
    • http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a184d2f4163---95335455188.pdfIn PDF document text
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/k18eh5indur7f8bh3745b72s14/40014673418.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=the+lost+world+book+pdf+downloadPDF link annotation

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