Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ed0bf9a12e98578…

MALICIOUS

PDF

74.6 KB Created: 2021-09-11 06:43:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 1d64b10327037c25ee8ecad67867f7cb SHA-1: 8cb07ad43e33e3186a44d5159c3cd96ff68c2486 SHA-256: 2ed0bf9a12e9857809ba1fc67b57908af31a5e82115791f5b4e8a91025aa4a98
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs, many of which are part of a link farm hosted on disposable domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The presence of multiple external URIs and the link farm structure suggest an attempt to redirect the user to a compromised or malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613b1773b184b---zalofijezodofifoxena.pdf In PDF document text
    • https://playindiano1.in/ckfinder/userfiles/files/78317282119.pdfIn PDF document text
    • http://michael-dhom.com/webseiten/file/14563645421.pdfIn PDF document text
    • http://metalzilemboeventi.com/userfiles/files/lobulozipomutorakev.pdfIn PDF document text
    • https://visualmotion.nl/uploads/file/85659294392.pdfIn PDF document text
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/161364642c131f---11350166299.pdfIn PDF document text
    • https://pemaboutiquehotel.com/assets/userfiles/files/84632314526.pdfIn PDF document text
    • http://irfanmakina.com/depo/sayfaresim/file/ponafatuwaxebitedum.pdfIn PDF document text
    • http://allineers.morefriendship.com/upload/files/15457048558.pdfIn PDF document text
    • https://kaptenhoki.net/contents/files/22488137391.pdfIn PDF document text
    • https://propactionvehiclesuk.tv/userfiles/files/xuxavas.pdfIn PDF document text
    • https://pastijptoto.com/contents/files/590367280.pdfIn PDF document text
    • http://smenergy.kr/uploaded/file/11071858261314bf854613.pdfIn PDF document text
    • http://shopgraeagle.com/ckeditor/uploads/files/kolasub.pdfIn PDF document text
    • http://swhwsolution.it/ckeditor-ckfinder-integration/uploads/files/dekamuropasamawujo.pdfIn PDF document text
    • https://okazdedziecko.pl/_files/Media/file/mulelunisilim.pdfIn PDF document text
    • https://www.supremecaravans.com.au/application/third_party/ckfinder/userfiles/files/depavajujoxilajuka.pdfIn PDF document text
    • http://ogledalata.bg/uploads/pages/files/tifado.pdfIn PDF document text
    • http://churchtextile.com/userfiles/file/fizuragogunoditefidesub.pdfIn PDF document text
    • http://cherriestattoo.com/ckfinder/userfiles/files/felatekedoxisowajele.pdfIn PDF document text
    • https://careersourcechipola.com/files/public/pozupopaxilazurokibelepo.pdfIn PDF document text
    • http://anadolumatbaa42.com/genelresimler/file/disex.pdfIn PDF document text
    • http://kastely-vacduka.hu/fileok/file/49732556306.pdfIn PDF document text
    • https://anukulagrotech.com/userfiles/file/24835998755.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=spoof+walking+pokemon+goPDF link annotation
    • 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_off0000c032.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC032 17300 bytes
SHA-256: 9c5cc8df240f8bfd8b7655e73bc9cc76fb8d4e1bf52b19b87ed930afdc527a29
font_01_sfnt_off0000ecd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000104eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104EB 10588 bytes
SHA-256: 5f5cf0d62c850461035e5d6c396245a92531175aa5555cd71e595def2af9fe4f