Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3ca19dbe44ee6e5…

MALICIOUS

PDF

53.9 KB Created: 2021-08-26 05:11:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: cb60f159bdb44fb69462a5c909b0e98d SHA-1: bb2bf99f2d6782b9fa2ba7dc1f762aec23103c56 SHA-256: e3ca19dbe44ee6e5d9c808312c8a6027432f7ad71a450ba8ad765398f62001eb
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. The heuristics reveal it functions as a link farm, directing users to download PDFs from compromised websites, masquerading as a PDF converter. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to malicious content, likely for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6492

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 http://fra2ange.it/userfiles/files/wimowefa.pdf In PDF document text
    • http://purpledoorchurch.com/wp-content/plugins/formcraft/file-upload/server/content/files/160716cf61f13b---88821220978.pdfIn PDF document text
    • http://everest-c.ru/ckfinder/userfiles/files/lujuvoloredino.pdfIn PDF document text
    • http://anthonyjcincottalaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/12051524342.pdfIn PDF document text
    • http://bowlinggreenhsclassof66.com/clients/b/bd/bdf8ab256cd88a603fc2b95a051c5839/File/sajebelebewodok.pdfIn PDF document text
    • http://kaiyudachem.com/filespath/files/20210801204630.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/7e6f23f72800640c474f04fca512c60b/69097124558.pdfIn PDF document text
    • https://amursvoidom.ru/media/files/30102017010.pdfIn PDF document text
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/ee67457507673a1ea6594c15dbdf26b3/64554879769.pdfIn PDF document text
    • http://gpn1971.org/clients/a/a2/a25689677492d603657f1241a2a69ea8/File/labolexafupuveso.pdfIn PDF document text
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609717867a68f---928914931.pdfIn PDF document text
    • http://mp-journal.com/media/file/sadadufuzebupibevu.pdfIn PDF document text
    • http://wypelnienia.kratex.pl/wp-content/plugins/super-forms/uploads/php/files/3c02c64a0ed3652b4037086ef99a29e1/75304343578.pdfIn PDF document text
    • http://angarakshaksecurity.com/userfiles/file/lopugumaxobatozoxudufuwu.pdfIn PDF document text
    • https://audreyheselmans.com/_files/file/17715365182.pdfIn PDF document text
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3d4be9bf69---87347565366.pdfIn PDF document text
    • https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160b458733fbba---jikafizoribevobabamefo.pdfIn PDF document text
    • http://kipia-nn.ru/userfiles/file/pavurudidekosu.pdfIn PDF document text
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160e2facb908b9---58332437861.pdfIn PDF document text
    • http://cncforginghammer.com/d/files/49399460301.pdfIn PDF document text
    • http://1carl.com/userfiles/file/jugevunubatorinezup.pdfIn PDF document text
    • http://www.jokilaaksonratsastajat.fi/file/tunere.pdfIn PDF document text
    • https://sip7.pl/autoinstalator/sip7.online/wp-content/plugins/super-forms/uploads/php/files/390efde0048800144b0c97947762371d/36974535146.pdfIn PDF document text
    • http://coalcreekcentenary.com/clients/5/52/52f735e63eff8706e1a2a73a20aef632/File/dakosepapipapitop.pdfIn PDF document text
    • https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/3rck97l072kh986v5n2o18g9jg/38540493290.pdfIn PDF document text
    • http://vititanon.com/user_img/files/tuzomodu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=download+pdf+converter+for+pcPDF link annotation

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