Malicious PDF — malware analysis report

Static analysis result for SHA-256 01ab4449c66ad339…

MALICIOUS

PDF

62.6 KB Created: 2021-09-06 02:45:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 1451ee71c611bbe3cc81524cc5ff5687 SHA-1: 3c88cd083bb4384a1912d49349e9a258ffc28818 SHA-256: 01ab4449c66ad3398f2cb695a695d6340259bfbc0ef7e86422fa0fbaa98cf862
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file is a PDF containing a link farm, with many URLs pointing to compromised WordPress sites. The ClamAV detection and ML classifier indicate malicious intent, likely phishing or malware distribution. The PDF structure and numerous external links suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6776

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 https://gbeequestriansurfaces.com/wp-content/plugins/super-forms/uploads/php/files/qfuk92d98nkbn0scldqkuqehqj/rorefikanigufumomozutezo.pdf In PDF document text
    • http://sartor.ru/upload/files/niriwimamurovoxitapovav.pdfIn PDF document text
    • https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/44e7d7cbd522fad0d0b7b85f96a574ee/6382037822.pdfIn PDF document text
    • https://armenia4d.com/contents//files/mepigam.pdfIn PDF document text
    • https://aulacvn.com/upload/fck/file/wazegedijojagepimexesi.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b06aa19b13---4280887280.pdfIn PDF document text
    • https://olmitek.by/wp-content/plugins/super-forms/uploads/php/files/r2fdltgnauprcis0q1qe7sadc0/63239349750.pdfIn PDF document text
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608af5d9adac6---furixesanugubotibato.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132f5cc0b6e7.pdfIn PDF document text
    • http://brainbond.ro/userfiles/file/xasavolukimojekad.pdfIn PDF document text
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/9l3sgmfpqhf6ock3922q27d6s7/fugijade.pdfIn PDF document text
    • http://aeronautike.com/userfiles/file/32298794053.pdfIn PDF document text
    • http://ebsenglish.net/_UploadFile/Images/file/94036997416.pdfIn PDF document text
    • https://www.anandtirth.com/wp-content/plugins/super-forms/uploads/php/files/4h19mreddgv5qb59utrdfgal41/16228503630.pdfIn PDF document text
    • https://micast.de/wp-content/plugins/super-forms/uploads/php/files/an8rgmqf8ecie7lbvr82caa8mv/35230662151.pdfIn PDF document text
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d0a9ce0213---87284637309.pdfIn PDF document text
    • https://eventaipei.com/upload/files/gomexibazuvufup.pdfIn PDF document text
    • http://xn--80aaeiengkwpz6p.xn--p1ai/pub/file/bivobasedejilefekisimos.pdfIn PDF document text
    • https://growyourmoney.in/userfiles/files/62692405050.pdfIn PDF document text
    • http://bouncebodysupplements.com/newerac2c/userfiles/file/63248564107.pdfIn PDF document text
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/1611d4cb85b2e1---tawawa.pdfIn PDF document text
    • http://e3edu.vn/public/ckfinder/core/connector/php/connector.phppublic/uploadsfiles/kajilo.pdfIn PDF document text
    • https://buka.ru/sadm_files/tawijilakelotobum.pdfIn PDF document text
    • https://steammining.com/userfiles/file/53085702766.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=external+hedging+techniques+pdfPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b2c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2C9 11112 bytes
SHA-256: 537a36d9450493eb973a7a05d2393c91c05d5d8f2e16532b391cf0f775362b06
font_01_sfnt_off0000cc14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC14 14340 bytes
SHA-256: abc08b5c2e58abd267bd0a3442b204ec4b760a19dfb825ced40048fce83b026f

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