Malicious PDF — malware analysis report

Static analysis result for SHA-256 06493eb34c8f594c…

MALICIOUS

PDF

69.9 KB Created: 2021-09-28 15:18:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: bd101ad561fb1ea5745eac570a80eb12 SHA-1: 914308cc73ea00a3dde2cd311ba28e2808ede245 SHA-256: 06493eb34c8f594c0e1b1c1fad305e8e5e91f0e3361651aba4de35bdb7076802
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to disposable domains, indicating a link farm designed to redirect users to potentially harmful content. The presence of external URIs and the nature of the detected heuristics strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9849

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://coretry.ru/uplcv?utm_term=blade+blade+burst+qr+codes PDF link annotation
    • http://dalieuht.com/app/webroot/uploads/files/vudiwenaviredoz.pdfIn PDF document text
    • http://okzawidow.pl/img/upload/files/32510657396.pdfIn PDF document text
    • https://find-domain.lazy-online-shop.com/app/webroot/userfiles/files/raret.pdfIn PDF document text
    • http://tipsclubcr.com/campannas/file/34501194069.pdfIn PDF document text
    • https://prokoncept.hu/admin/blogfck/image/file/22124393794.pdfIn PDF document text
    • http://nigerseedindia.com/uploads/28883285330.pdfIn PDF document text
    • http://drsuthichai.com/userfiles/files/60647795464.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613329276c557---12508641166.pdfIn PDF document text
    • http://ylpcl.com/ckfinder/userfiles/files/27119453574.pdfIn PDF document text
    • https://shivajigrihnirman.com/singhania/downloads/file/42090158662.pdfIn PDF document text
    • http://nfc-lampang.com/user_img/files/71582355901.pdfIn PDF document text
    • http://assessmentinsight.com/ckfinder/userfiles/files/mabewenuzipefizuruvobiwa.pdfIn PDF document text
    • http://dentalclinicbangalore.com/uploads/55713149810.pdfIn PDF document text
    • http://ikra-ekb.ru/files/fckeditor/file/46408896293.pdfIn PDF document text
    • http://mimarkamilozkartal.com/userfiles/files/6372463959.pdfIn PDF document text
    • https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/qrbfru2haacto009ccbgegve20/91649791116.pdfIn PDF document text
    • http://limoride.net/gallery/file/xuzawujoziremedoxexuzelem.pdfIn PDF document text
    • http://zamaro.cz/images/fcke_files/file/27578538239.pdfIn PDF document text
    • http://dobrasekacka.cz/userfiles/file/94983662519.pdfIn PDF document text
    • http://ipllaser.in/uploads/73764189224.pdfIn PDF document text
    • http://weforyou.it/userfiles/files/28287390252.pdfIn PDF document text
    • https://soosekszer.hu/upload/files/sifik.pdfIn PDF document text
    • https://sammycar.ch/sammy/sites/default/sammyfiles/newsletterfile/sanemetevurowisi.pdfIn PDF document text
    • http://ingmontagna.com/userfiles/files/zuzikabuso.pdfIn PDF document text
    • http://talcmanagement.com/uploaded_files/userfiles/files/gemedekabomutewofazunikez.pdfIn PDF document text
    • http://bayernglobal.de/userVZ/file/27783645699.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • 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_off0000b0f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0F5 15468 bytes
SHA-256: 676170594e82bf2bef9d2cfab957dcc403c75da182784bf7623123eba0ff3d69
font_01_sfnt_off0000d815.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD815 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f02c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF02C 10604 bytes
SHA-256: afabee0e4711d54ef30bfa9ae19e8feac3607e527b023dfe4a12723e1c0cbd65