Malicious PDF — malware analysis report

Static analysis result for SHA-256 f62125f55a0d7390…

MALICIOUS

PDF

47.4 KB Created: 2021-09-03 21:19:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 488f0aee398b2443283fbd05d34928de SHA-1: bb310292b768df3793391812dd51e141f0899fbe SHA-256: f62125f55a0d7390a0c02f668d13c835fe67ff1144b771e34d938ea21d356a03
154 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which point to compromised or disposable domains, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware delivery through these links. No scripts were extracted, but the structure and URL analysis point to a malicious link distribution pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7355

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://kirilmazbardak.com/userfiles/file/39924404636.pdf In PDF document text
    • https://szamitogep-szerviz-javitas.hu/ckfinder/userfiles/files/gefezodawajamozupabiset.pdfIn PDF document text
    • http://art-lan.ru/uploads/assets/file/85193126807.pdfIn PDF document text
    • https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607420de5af58---23968913439.pdfIn PDF document text
    • https://uleshuzataruhaz.hu/files/file/99559895758.pdfIn PDF document text
    • http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/16091f39be46a8---suxixepikuzuzu.pdfIn PDF document text
    • http://outspokenholland.com/userfiles/fckFile/20210516092418.pdfIn PDF document text
    • http://bright-inter.com/file_media/file_image/file/fitudowulalamabozaxi.pdfIn PDF document text
    • https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/c417b1c15e4fa833c10e7c4523a39b88/bodukidopob.pdfIn PDF document text
    • http://business-plan-capalpha.eu/mbp/upload/images/images/upload/ckfinder/25746964956.pdfIn PDF document text
    • https://him-home.ru/wp-content/plugins/super-forms/uploads/php/files/7160316a7ea5105c7eab0448fff36853/46277325047.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/65c0392dfa039769b517b51613da8409/xuzikijenivaxepik.pdfIn PDF document text
    • https://damiel.eu/userfiles/file/18762056998.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/rowedanegemimivijixenun.pdfIn PDF document text
    • http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160bd49ff0f5dc---3118817160.pdfIn PDF document text
    • http://inter-travel.hu/_user/file/60087301073.pdfIn PDF document text
    • https://iohrp.org/f_files/files/70506626184.pdfIn PDF document text
    • https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/f918e54b3789432e070f4767fe87a23c/jonafojikuxofomibilizi.pdfIn PDF document text
    • http://www.udelimpa.es/ckfinder/userfiles/files/lamelizumugabalawikaxu.pdfIn PDF document text
    • https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/af9d82205a5d48450c86660a21552c5a/bixudogasurukivorobof.pdfIn PDF document text
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/60aa0654d5c04d9d75804bca8d84784e/wesov.pdfIn PDF document text
    • https://readxyz.com/wp-content/plugins/super-forms/uploads/php/files/7e05d44177fba1e0ba5407bf7298a349/lugokulumovutabudoda.pdfIn PDF document text
    • https://macauroommate.com/ckfinder/userfiles/files/5479786167.pdfIn PDF document text
    • https://thanaclusterwestgate.leaddeehub.com/userfiles/files/70673414287.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=3rd+grade+reading+passages+with+multiple+choice+questions+pdfPDF link annotation

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