Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbdb15d5bc05b127…

MALICIOUS

PDF

52.6 KB Created: 2021-07-15 11:48:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 4e3ce12ae4942aa29a00f4247231546c SHA-1: 2ecda5368c7c6150eb0d890d7e1bf60fed8d1497 SHA-256: bbdb15d5bc05b127db1827cece70410fc510ab147080568f38004be20f8ce263
154 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ClamAV and an ML classifier. It contains numerous links, many pointing to compromised CMS uploads or disposable hosting, suggesting it functions as a link farm. The presence of external URIs and a high number of distinct hosts indicates an attempt to redirect users to potentially harmful content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6843

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://drafthe.ru/uplcv?utm_term=scary+movie+3+online PDF link annotation
    • http://mankatomnclassof71.com/clients/e/e0/e0e8961458839910853a12af65841b27/File/mumaxoladobusita.pdfIn PDF document text
    • https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/def12ed493eb6801ec01c24810846544/53902515376.pdfIn PDF document text
    • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/1606f9f7af330f---bapovazamofodosi.pdfIn PDF document text
    • http://www.lifestaralberta.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608763fb13f02---nulaxowixivudafetetu.pdfIn PDF document text
    • https://www.aserspa.net/wp-content/plugins/super-forms/uploads/php/files/bq2v71vrirp4ullleo6msd626c/bigoze.pdfIn PDF document text
    • http://energo-market.ru/sadm_files/livadusesorifirenoj.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/1609d11265fc47---xawetiguseresaregogejapes.pdfIn PDF document text
    • https://cometsecurity.in/admin/userfiles/file/gexebavavibidimalejuz.pdfIn PDF document text
    • http://baigeleather.com/userfiles/file/banaxanoma.pdfIn PDF document text
    • https://viajespereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b24d1590c76---59709837770.pdfIn PDF document text
    • https://harom.ro/files/file/zasiledu.pdfIn PDF document text
    • https://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/7de10c9febc8f6f3e3569f39918e84dc/selelapetotuvolikavorazot.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607674425054f---xojapuxobiloxurivevejut.pdfIn PDF document text
    • https://www.eoluk.com/wp-content/plugins/super-forms/uploads/php/files/2r13hue14ea4kabiromcko0ajh/19222434433.pdfIn PDF document text
    • https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/qhu755ic04lki7celegmhiia22/18168280353.pdfIn PDF document text
    • http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/076d72d835d9bad1edc02750dbe2abd3/91223854046.pdfIn PDF document text
    • http://zabradli-znerezu.cz/userfiles/file/beruperujejopolowogawon.pdfIn PDF document text
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c4c0211557---54091091900.pdfIn PDF document text
    • http://samafb.org/uploadfilefiles/rijesokivofogaboresifi.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/160cbde9616547---jobiduwiji.pdfIn PDF document text
    • http://tatvideo.ru/ckfinder/userfiles/files/xisaxijavigixan.pdfIn PDF document text
    • https://sharpspringwww.kinsta.cloud/wp-content/plugins/super-forms/uploads/php/files/2b10856bc6b809606d2af0f593c3edb2/kesizomotaruguj.pdfIn PDF document text

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