Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d751be7cac50ecc…

MALICIOUS

PDF

54.0 KB Created: 2021-09-26 08:33:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 6d26dfe18bf2d2e12c88e89840c22f76 SHA-1: 11295cb6ab4d8ab0ac03f9a8e80d41cba337bf13 SHA-256: 4d751be7cac50ecc75412027bb4e58056655f43d1271656daef6066897b3b4e3
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, many of which point to suspicious domains and appear to be part of a link farm, suggesting a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8449

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 https://madame-tina.com/ckfinder/userfiles/files/89458479231.pdf In PDF document text
    • http://congseng.com/uploadfile/files/40651175485.pdfIn PDF document text
    • http://quiltingacademy.net/fckeditor/userfiles/file/banim.pdfIn PDF document text
    • http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16144b056d4642---87722721852.pdfIn PDF document text
    • http://asiancfea.org/userfiles/file/sixerab.pdfIn PDF document text
    • http://energy-labels.com/userfiles/file/31459902394.pdfIn PDF document text
    • https://dolaodong.com/userfiles/file/2810567046.pdfIn PDF document text
    • http://degrossier.nl/uploads/file/3203981774.pdfIn PDF document text
    • https://5of7edwardstreet.com/assets/media/files/40095700601.pdfIn PDF document text
    • http://vector-mebel.ru/uploads/files/99950968641.pdfIn PDF document text
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/161369810447b8---nozedeloxefexojuzenil.pdfIn PDF document text
    • https://tavio.ru/files/file/tolij.pdfIn PDF document text
    • http://uchid.com/uploads/file/lidatuneged.pdfIn PDF document text
    • http://srtcivilnorth.com/ckeditor_file/files/wapipixafarilofi.pdfIn PDF document text
    • http://xn--80aafkatcapceshpicpg3h.xn--p1ai/pict/file/pefebuxav.pdfIn PDF document text
    • http://rem-proekt.com/f/file/keguwi.pdfIn PDF document text
    • http://toanthinh.vn/webroot/img/files/kunebubap.pdfIn PDF document text
    • http://www.fonfe.com/uploads/files/sudogixokudowisabatikaw.pdfIn PDF document text
    • http://kirakuramenandsushi.com/uploads/files/61609696836.pdfIn PDF document text
    • http://jmestateplanning.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/naxovugatulu.pdfIn PDF document text
    • http://hud101.vn/webroot/img/posts/files/woxujotepig.pdfIn PDF document text
    • http://gzky.cn/dubeite/ckfinder/userfiles/files/20210905_052921.pdfIn PDF document text
    • http://lawfirm.vn/MINH/user_files/file/14581112014.pdfIn PDF document text
    • http://rc-saty.cz/gais/image/file/80624637370.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=old+black+and+white+movies+free+onlinePDF 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_off0000b20e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB20E 15808 bytes
SHA-256: 93693aaee59867d6db6746fc7f9490c24fa6fe67083efe06ab5975ce528bb6c8

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