Malicious PDF — malware analysis report

Static analysis result for SHA-256 e97cf6842f158ebe…

MALICIOUS

PDF

79.0 KB Created: 2021-09-27 11:22:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 35d77fd58a7f8687a4adbd4fa54122b2 SHA-1: ae17a06c6e1998cb608522a8603bccb2abf7bee9 SHA-256: e97cf6842f158ebe67237626362b6eebbd8982624b073ef7f065ec122e6769c1
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It functions as a link farm, with many embedded URLs pointing to various websites, including compromised WordPress installations. The primary purpose appears to be directing users to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6717

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://ihanzao.com/userfiles/file/20210927131310_298815541.pdf In PDF document text
    • http://radio-salsa.com/php/rs/filesupload/file/jesiborawusavozokufo.pdfIn PDF document text
    • http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/225f14cbee7e3f6116a898c14fed27b5/7672655799.pdfIn PDF document text
    • http://upoart.com/ckfinder/userfiles/files/53010893030.pdfIn PDF document text
    • https://guapa2.com/admin/fck/file/vikiramukojew.pdfIn PDF document text
    • https://velvetskin.pl/wp-content/plugins/super-forms/uploads/php/files/f13aacd7a61190d24279d14562a7bdbe/94974490755.pdfIn PDF document text
    • https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1614210c9cc62c---titutaz.pdfIn PDF document text
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16145b2fc85afc---33579990739.pdfIn PDF document text
    • http://xn----7sbndn5at.xn--p1ai/uploads/files/rilakudarexozodedes.pdfIn PDF document text
    • https://infiniteprospects.com/FCKeditor/file/62227322261.pdfIn PDF document text
    • http://nyitotthaz.hu/userfiles/files/javafatosezudegivofimexev.pdfIn PDF document text
    • http://drivescuolaguida.it/userfiles/files/nipagujujaturelizedujeke.pdfIn PDF document text
    • https://bmw-zona.ru/uploads/file/gufatev.pdfIn PDF document text
    • https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/jir7rv3e5lbbemv8tmls20k9g5/26548549424.pdfIn PDF document text
    • https://websbag.com/uploads/files/suramobimorelituvi.pdfIn PDF document text
    • https://vidaleve.net/ckfinder/userfiles/files/pajugovolifiz.pdfIn PDF document text
    • http://www.ks-klinika.ru/ckfinder/userfiles/files/95452980506.pdfIn PDF document text
    • http://l-max.ru/userfiles/file/98443995433.pdfIn PDF document text
    • http://musthighschool.mn/ckfinder/userfiles/files/39796836456.pdfIn PDF document text
    • http://panziofabian.hu/fck_kepek/weraginekopepibar.pdfIn PDF document text
    • http://ifap.it/images/file/50150725875.pdfIn PDF document text
    • https://motodubai.com/uploaded_images/files/silezot.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=yik+yak+androidPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e392.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE392 16808 bytes
SHA-256: 091dd7dccbb434190d032b7bcb509e1d07fefc95476b6350fa04dd4ef67b199d
font_01_sfnt_off00010f4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F4E 9984 bytes
SHA-256: 32d6b9f1fe796aa06814d03cdd4d672613dcbc05f0a2d14d3a32bc7348ea77f1
font_02_sfnt_off00012576.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12576 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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