Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c8fac08a50c3b8e…

MALICIOUS

PDF

69.1 KB Created: 2021-09-16 19:26:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 09eee6baeb586a165d5df842c2d9b5e0 SHA-1: 3d6a1dadbc83fd84eecae5455fc90b2b51a6664b SHA-256: 7c8fac08a50c3b8e02620d38dfd5fbb914ab5223eae85e1db1ffef9ae8c7b102
132 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and numerous external links, many pointing to disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded JavaScript likely facilitates the execution of further malicious code or redirects the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7921

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://ledlight-lamp.com/mingyi/images/userfiles/file/46187340884.pdf In PDF document text
    • http://tourbusan.net/FileData/ckfinder/files/20210911_9A9A942A01FB12C4.pdfIn PDF document text
    • http://48bulls.com/js/upload/files/88082535947.pdfIn PDF document text
    • https://krzczonowice.pl/gfx/file/44975672054.pdfIn PDF document text
    • http://photo-ostrov.com/ckfinder/userfiles/files/balifawapo.pdfIn PDF document text
    • http://klinok-saintp.ru/files/vewugibi.pdfIn PDF document text
    • http://quantri.thaisonpalacehotel.com/upload/files/zujetuselakikoxepuxope.pdfIn PDF document text
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16134a9242a7d0---xejovarexinojat.pdfIn PDF document text
    • http://kxqcgs.com/filespath/files/20210902074528.pdfIn PDF document text
    • http://nut-shell.net/upload/files/75454427931.pdfIn PDF document text
    • http://saraswatishikshamandir.com/singhania/downloads/file/92356248457.pdfIn PDF document text
    • http://studioindelicato.com/userfiles/files/79354513026.pdfIn PDF document text
    • http://cansuyu.org/resimler/files/31261565135.pdfIn PDF document text
    • http://olympicburger1988.com/uploads/files/wepunalufimezibanepulebeb.pdfIn PDF document text
    • http://flairpens.ru/uploads/file/kimepakapifutevega.pdfIn PDF document text
    • https://www.sidertest.it/wp-content/plugins/formcraft/file-upload/server/content/files/1612f5468c626f---8007213092.pdfIn PDF document text
    • https://guijek.com/userfiles/file/rasuzik.pdfIn PDF document text
    • https://clubberia.com/js/ckfinder/userfiles/files/74589881565.pdfIn PDF document text
    • http://spprp.pl/userfiles/file/ginitet.pdfIn PDF document text
    • http://beveragesgs.com/userfiles/file/lifomurije.pdfIn PDF document text
    • http://asremajazi.com/uploads/files/vakisumesedosutet.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=pc+app+store+download+apkPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d929.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD929 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.