Malicious PDF — malware analysis report

Static analysis result for SHA-256 20fe0aab3535b55a…

MALICIOUS

PDF

44.2 KB Created: 2021-07-13 17:15:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 865fbcc5dcdd2680a856b65e5d98b678 SHA-1: 4f14220eeb564ef1d7a3f647bf348515e90c2b42 SHA-256: 20fe0aab3535b55a5b2a4796ef71daf49140409e82cd713b4189c4a78b2508ca
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by multiple heuristics and an ML classifier, with ClamAV detecting it as a phishing trojan. The document employs an image-only lure, typical of phishing campaigns, and contains numerous links pointing to compromised WordPress upload directories and other disposable hosting sites. These links likely serve as a mechanism to redirect users to malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7206

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 1 text block(s), carries a click-outward action, and is only 44 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 https://huntic.ru/uplcv?utm_term=python+array+subset PDF link annotation
    • http://guides2alpes.fr/uploads/file/ridisujegekisila.pdfIn PDF document text
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2f83c4206d---tuxobured.pdfIn PDF document text
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c6549e9392---80962323377.pdfIn PDF document text
    • https://daquin-ferriere.fr/userfiles/file/mabob.pdfIn PDF document text
    • http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/1609ad9fdbecc4---tejabakipujevi.pdfIn PDF document text
    • https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/4a63cd35aa4bdafc42ff47083a548fcc/zamidak.pdfIn PDF document text
    • https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160812f954f823---vusagubom.pdfIn PDF document text
    • http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16081e2429e37e---10387998193.pdfIn PDF document text
    • https://transport-vehicules.fr/userfiles/file/19277880668.pdfIn PDF document text
    • https://sckprime.com/wp-content/plugins/super-forms/uploads/php/files/a9de31dbd661cfb635cd77b585cfbdeb/54464997789.pdfIn PDF document text
    • http://patrick-vallot.com/upload/files/dojusapogafi.pdfIn PDF document text
    • https://parfumzone.ro/files/file/45616742287.pdfIn PDF document text
    • https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/2vdvd6bqr1jtubjjpgas5svbsl/kuzebamipuwugutodum.pdfIn PDF document text
    • https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607223f4aea8c---likoxe.pdfIn PDF document text
    • http://progettarecasa.com/userfiles/files/89686610983.pdfIn PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074855f3d6e6---3622303348.pdfIn PDF document text
    • http://nuyewpilot.academy/wp-content/plugins/super-forms/uploads/php/files/07cbcf6d02c68e1852c9db91dde0f22f/mamazosalugopu.pdfIn PDF document text
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/b275735a01c354b5f1f8f4ffdf012adb/wumiko.pdfIn PDF document text
    • http://kcobafl.org/ckfinder/userfiles/files/bodemol.pdfIn PDF document text
    • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160732b36d59d3---lawugusipojekuxosu.pdfIn PDF document text
    • https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/n57r1m9ccbtgbsgj757nf6ih47/38442229022.pdfIn PDF document text
    • http://plafondchauffant.fr//img/user/file/63541836657.pdfIn PDF document text
    • https://novahealthclinic.ca/userfiles/file/61577686103.pdfIn PDF document text

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