Malicious PDF — malware analysis report

Static analysis result for SHA-256 14ce094063320044…

MALICIOUS

PDF

65.1 KB Created: 2021-09-26 20:35:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: b7169b0872a64854ef7294ada45ed80d SHA-1: 453e77814140ed098180bd74e64fc2f633034c92 SHA-256: 14ce094063320044c4c6954432730bbbe8f6b6638d2c92edf9ecc2d1dbc9bbb8
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ClamAV, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing infrastructure. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this, indicating the PDF is designed to link to many distinct, potentially malicious hosts. No scripts were extracted, but the overall structure and URL distribution point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4355

Heuristics 4

  • 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.
  • 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.sosonomo.com/ckfinder/userfiles/files/7503759737.pdf In PDF document text
    • http://jindi2010.com/uploadfile/files/vujizuvowogiw.pdfIn PDF document text
    • https://exhibitproplus.net/mentorfinancial/page_images/file/153538248.pdfIn PDF document text
    • http://pass38.com/images/contentimages/files/galadovilalogavi.pdfIn PDF document text
    • https://zlatartopalovic.rs/files/69941835785.pdfIn PDF document text
    • http://krr-nfe.com/suratnfe/UserFiles/File/sawipow.pdfIn PDF document text
    • https://lochoanggia.com/upload/files/4382782617.pdfIn PDF document text
    • http://sangjeom.com/userfiles/file///62838018561.pdfIn PDF document text
    • http://dhleisure.com/ckupload/files/virezusonetab.pdfIn PDF document text
    • http://classtool.info/upload/files/xoreregejavuxu.pdfIn PDF document text
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614823484bb27---3665825676.pdfIn PDF document text
    • http://letnipohar.cz/upload/file/32613806899.pdfIn PDF document text
    • https://xuantruongtech.com/images/ckeditor/files/81617123060.pdfIn PDF document text
    • https://bjjewels.net/nbloom/fckuploads/file/pefomedotetuludigiko.pdfIn PDF document text
    • https://mavachhaiphong.com/upload/files/jipizotijasibu.pdfIn PDF document text
    • http://tvcsoltau.de/userfiles/file/lonavajifaxamosidigas.pdfIn PDF document text
    • https://skvely-kup.cz/files/file/vanofebugazu.pdfIn PDF document text
    • http://www.diplomat2014.ru/ckfinder/userfiles/files/mukivuwamozesajukixidelif.pdfIn PDF document text
    • http://hawaii-resort.info/images/blog/file/lofevubuvava.pdfIn PDF document text
    • https://eingangrad.ch/userfiles/files/98293802113.pdfIn PDF document text
    • http://hk-keber.de/images/file/jiwififovulufisibobi.pdfIn PDF document text
    • https://tort-art.ru/userfiles/file/90611260659.pdfIn PDF document text
    • http://naphotelbangkok.com/userfiles/files/vekirivom.pdfIn PDF document text
    • http://esrafisek.com/images_upload/files/55653461338.pdfIn PDF document text
    • http://vattucongtrinh.com/userfiles/file/63850757631.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=what+words+do+you+not+capitalize+in+a+titlePDF 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_off0000b329.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB329 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000cb3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB3B 16536 bytes
SHA-256: 1dc7efa749d5e33309d2e177536ec2d03ce6dd83f9e6fb0a5e2b30126794b26b