Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2489b04dc20201c…

MALICIOUS

PDF

63.6 KB Created: 2021-08-04 05:46:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: be946de52d473f2484b85543078f80ce SHA-1: 0ae96dd48e2c1759a3df9aa5ee512024ea636a4f SHA-256: d2489b04dc20201c085b1de21c378409b4cd745f322af1dd2fa79765f9c259fe
154 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to websites hosted on compromised WordPress installations or other disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to lure users to malicious sites through a link farm. The presence of multiple links to compromised CMS upload storage suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9593

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://www.heksan.com.pl/file/60011620699.pdf In PDF document text
    • http://aircond.md/upload_fck/file/50218891571.pdfIn PDF document text
    • http://aa-nusd.jp/38275485998.pdfIn PDF document text
    • http://sumtinathholidays.com/admin/uploadfiles/file/64370927601.pdfIn PDF document text
    • https://pmfegypt.com/userfiles/files/15953080124.pdfIn PDF document text
    • https://aedwea.com/upload/foto/pasukapifanakewejutunabu.pdfIn PDF document text
    • https://prtl.pl/userfiles/file/gavogejelagiwajo.pdfIn PDF document text
    • https://hkbca.org/UploadFiles/file/20210616020834121.pdfIn PDF document text
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607535a424cc1---dasujikiditokub.pdfIn PDF document text
    • http://douzonebnf.com/upload/file///80923682866.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081cbfcddd39---nugokerulowuzakubiginemul.pdfIn PDF document text
    • http://spreewaldatelier.de/img/editor/file/59006046646.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c8995ca3b7a---68149741096.pdfIn PDF document text
    • http://longarmquiltacademy.net/fckeditor/userfiles/file/rufobo.pdfIn PDF document text
    • http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/160a0ff3df2893---32350465213.pdfIn PDF document text
    • https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/7ca0d0f0b05663c8608ba0b585be1ab8/pevawes.pdfIn PDF document text
    • http://marcth.pl/media/fck/file/domiwexiripomalanagu.pdfIn PDF document text
    • https://divinenine.net/userfiles/file/96098414609.pdfIn PDF document text
    • http://haozuowenwang.com/imagefiles/file/4469025933.pdfIn PDF document text
    • https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/f94150d12da48035511506b11fd5b7a9/75414799127.pdfIn PDF document text
    • https://careersourceokaloosawalton.com/files/public/32280368022.pdfIn PDF document text
    • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607df3f7b063d---tizenomidifufinerow.pdfIn PDF document text
    • https://ag-concept.ru/wp-content/plugins/super-forms/uploads/php/files/0f1eaa3ab0b2df8e1537bdd97489ef66/31003796322.pdfIn PDF document text
    • https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/152e004e1b9871a778f517cc09614887/96084020437.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=sample+cover+letter+for+academic+librarian+positionPDF link annotation

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