Malicious PDF — malware analysis report

Static analysis result for SHA-256 b65bdf15fc6760a9…

MALICIOUS

PDF

62.3 KB Created: 2021-08-11 22:53:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: 6073a8f960879d5e8557f35e12c8ba20 SHA-1: 1e5070ccceae59aadda73b333d36a6ed4ba1d94f SHA-256: b65bdf15fc6760a9f449cdf2ca8729c5f6f75fd2f4d6ce1ad22948696220d8b9
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV with the signature Pdf.Phishing.Trojan. The PDF contains a link farm with numerous URLs pointing to compromised WordPress upload directories and disposable hosting sites. These links are likely intended to redirect users to phishing or malware distribution sites.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3485

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://smidgel.ru/uplcv?utm_term=api+20ne+biomerieux+pdf PDF link annotation
    • http://apvn.info/userfiles/file/fojapazivalofumog.pdfIn PDF document text
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606c807938f9c---xafupofida.pdfIn PDF document text
    • http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a22e3e2ba17---41936358760.pdfIn PDF document text
    • https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/efa6dd968be9ab5b7f26bca113727c87/xezuvuruvomesereti.pdfIn PDF document text
    • https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/529de04782c79efaa09a208617295f43/tosowunegowakolegefon.pdfIn PDF document text
    • http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a3d5af1c9ec---xivufusinedorolalitokare.pdfIn PDF document text
    • http://brno-skoleniridicu.cz/ckfinder/userfiles/files/71589155104.pdfIn PDF document text
    • https://njsolarpower.com/wp-content/plugins/super-forms/uploads/php/files/ee63a582ba387c316841944bcc8d50a2/62959609546.pdfIn PDF document text
    • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/160873e49d3767---19700611863.pdfIn PDF document text
    • http://lotuscourtpune.com/wp-content/plugins/super-forms/uploads/php/files/kgnb1dspke4f5k85hn3q240s07/26630326261.pdfIn PDF document text
    • https://ooo-kenk.ru/userfiles/file/81148561143.pdfIn PDF document text
    • http://tropo-design.com/ckfinder/userfiles/files/71593835158.pdfIn PDF document text
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b46e9646024---28964758898.pdfIn PDF document text
    • http://brmhn.com/userfiles/file/20210713152018_y4xr78.pdfIn PDF document text
    • http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606dfea5b381b---viwivuxafomijujosizomoseg.pdfIn PDF document text
    • https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160acda469f78e---15674572793.pdfIn PDF document text
    • https://agatanorek.com/files/file/solelavotebibotuzef.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607805dfbdf99---67577434204.pdfIn PDF document text
    • http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16078a3449a98e---kobesuzetutanodexineguxo.pdfIn PDF document text
    • http://pagyesa.org/userfiles/file/20210718022334.pdfIn PDF document text
    • https://baptistfriends.org/media/fewipolevikatag.pdfIn PDF document text
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2c4c8d2491---tevugogup.pdfIn PDF document text
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/rlb8msjneh12os0mac26f5umh7/65160360499.pdfIn PDF document text
    • https://rivaflo-south.in/userfiles/files/41011673430.pdfIn PDF document text
    • https://asthasupermarket.com/userfiles/file/tilifinuxedisojumexatezaz.pdfIn PDF document text
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a16ca5d4b19---43488584230.pdfIn PDF document text

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