Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b41a2a4432fa0f4…

MALICIOUS

PDF

256.0 KB Created: 2021-07-06 11:59:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: 77b905d622c853b862a6f3157d527b7e SHA-1: 8391bd57e369969531201c21fb7bf8a44e4d9c43 SHA-256: 4b41a2a4432fa0f48c9be9b777a304ef286f8db9cebf0c9d7412d9a7a4156fe8
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a malicious PDF, as indicated by ML classification and ClamAV detection. It contains multiple links pointing to compromised WordPress upload directories, suggesting it's designed to host and distribute further malicious content. The presence of external URIs and IP address literals further supports its role as a distribution vector, likely for phishing or malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7848

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.
  • 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://afghansolar.com/userfiles/file/fuvunizij.pdf In PDF document text
    • http://seabeachthailand.com/UserFiles/file/saloru.pdfIn PDF document text
    • http://jointrilogy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d711513688---77665377394.pdfIn PDF document text
    • https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/2f712c9d1d492dd9344c083119910dd5/nupunesidelebalegajej.pdfIn PDF document text
    • https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/27l4hoifi1c39aa995ggqgnh7t/nivolidagefejanizimuvumo.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c7accc9478e---tanosonaforerizanalesesem.pdfIn PDF document text
    • https://cosalesrep.com/wp-content/plugins/super-forms/uploads/php/files/fff638e1c8ae1dede38dc6f7dad8b527/19414745303.pdfIn PDF document text
    • http://111-orte.de/testarea/cwsCMSlight/media/files/21972861575.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160befd66e94b6---buzegiviz.pdfIn PDF document text
    • http://www.sandzthabapanel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a0a0226293e---69124032444.pdfIn PDF document text
    • https://triosms.com/userfiles/file/viwuvewotixumevanotaporik.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2c2088bcec---guduvanexenupuv.pdfIn PDF document text
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607eb79358bf2---lalilazanutugalivu.pdfIn PDF document text
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/8aganddo4kti0nirtpbjhdcf56/46723025578.pdfIn PDF document text
    • https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/c99b3aa3188c67b4ba4139e7b1d4b71c/36407776209.pdfIn PDF document text
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/160d63e681b1b9---nowipezewupuduk.pdfIn PDF document text
    • https://autoandtruckrepair.net/nbloom/fckuploads/file/zubesogatagajirolap.pdfIn PDF document text
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/a2c03b1c22c51ff694a39cf4d95421d9/43384161136.pdfIn PDF document text
    • http://jagodkaprzedszkole.pl/userfiles/file/11302102095.pdfIn PDF document text
    • https://eatorhours.org/e-bussiness/fckimages/file/27726215032.pdfIn PDF document text
    • https://sinarwaja.com/account/files/69017751538.pdfIn PDF document text
    • https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160ba3cab86515---92688661273.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/160bfad8ce9c66---papanosu.pdfPDF link annotation
    • https://www.nobleorthodontic.com/wp-content/plugins/super-forms/uploads/php/files/c58b4b4eeaa661f79207ff96ead6c369/sifuwibadaxozil.pdfIn PDF document text
    • https://wilsonbarrera.com/inicio/wp-content/plugins/formcraft/file-upload/server/content/files/16090ce3f29629---vodelenivotogazufem.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=robinson+crusoe+chapter+3+questions+and+answersPDF link annotation

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