Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed2d36c7e4941e69…

MALICIOUS

PDF

47.6 KB Created: 2021-10-17 00:59:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 9d0cfb5ce2e5200a4573a8a46f69f453 SHA-1: 883802a54b18411be7cb876b8958a35758a06398 SHA-256: ed2d36c7e4941e69cd2b79d20529b4d6ac95a184e0f204a88033f3010a3a99b3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to various domains, many of which are hosted on compromised WordPress sites or disposable hosting, indicating a link farm designed to distribute malicious content. The ClamAV detection as 'Pdf.Phishing.Trojan' and the ML classifier's high score further support its malicious nature. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with phishing or malware delivery campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7471

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://nomylo.ru/uplcv?utm_term=the+beautyful+ones+are+not+yet+born+chapter+summaries+pdf PDF link annotation
    • http://reopen911.info/media/file/duziruwobuvosufa.pdfIn PDF document text
    • http://jsdarvin.com/files/guzigomogalixisakil.pdfIn PDF document text
    • http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ec5dd36b88---42117850915.pdfIn PDF document text
    • https://smilaxlabs.com/userfiles/files/raburulelazenabuni.pdfIn PDF document text
    • https://nergizleryapi.com/image/files/jipokolinazexeji.pdfIn PDF document text
    • https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/170827bcd99fc025a266878f1240c822/kuzanatavegafusiwidopabub.pdfIn PDF document text
    • http://phaptangpgvn.net/app/webroot/upload/files/dokisiwitozaxololofozabiw.pdfIn PDF document text
    • http://lukoilmarine.com/ckfinder/userfiles/files/96165394278.pdfIn PDF document text
    • http://miminku2.com/contents/files/64906192429.pdfIn PDF document text
    • http://www.mab-solutions.fr/upload/file/50952089456.pdfIn PDF document text
    • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/r3fos8ms1qsvn1dmjucsffhf92/85204353706.pdfIn PDF document text
    • http://jtipartner.com/ckfinder/userfiles/files/tilofipuzafe.pdfIn PDF document text
    • https://dolupin.com/calisma2/files/uploads/87186019016.pdfIn PDF document text
    • http://poliinc.com/upload/files/53480936173.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a9a6a66222---vivubinupilakade.pdfIn PDF document text
    • http://zenpersonnel.com/UserFiles/file/bewagulatosadosutulu.pdfIn PDF document text
    • http://wuyioutdoor.com/userfiles/file/27586863031.pdfIn PDF document text
    • http://bezagsecurity.cz/userfiles/48318209805.pdfIn PDF document text
    • https://mobspace.xyz/web/img/podborky/files/zanara.pdfIn PDF document text
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/16152ac935d8a9---75575598247.pdfIn PDF document text
    • http://anabakorea.jp/userfiles/file/41698209467.pdfIn PDF document text
    • http://kiemdinhcan.com/Images_upload/files/71469858323.pdfIn PDF document text
    • http://sedaciesupravy.sk/media/file/ritigekevenu.pdfIn PDF document text
    • http://brunagabriele.it/userfiles/files/wavelopedodifesijep.pdfIn PDF document text
    • https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161593aebedc68---51243236564.pdfIn PDF document text

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