Malicious PDF — malware analysis report

Static analysis result for SHA-256 269c6b89ea3bdea2…

MALICIOUS

PDF

69.6 KB Created: 2021-10-03 06:56:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 01f638aff80def2325fa6b4d074ffa6d SHA-1: 1507191ed5f48350d91db57f6c5e5ef75c100add SHA-256: 269c6b89ea3bdea244313e23f4930c253f1767b56d9679b1288a48a59dedb652
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised CMS uploads and disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

Heuristics 6

  • 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
  • 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://rtvpuls.com/ckfinder/userfiles/files/domifudiwilokavijej.pdf In PDF document text
    • https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f80d50f8b0---rarafuwa.pdfIn PDF document text
    • http://turhantur.com/turhantur/files/bowujivuku.pdfIn PDF document text
    • http://stoka-saarlouis.de/userfiles/file/28040628920.pdfIn PDF document text
    • http://desirepara.fun4two.pl/uploads/assets/file/77194049693.pdfIn PDF document text
    • http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1614f28ff48ead---nexixelofakibasuv.pdfIn PDF document text
    • https://eseninternational.com/uploads/files/11577647904.pdfIn PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/1613c636e08591---zaxepadanifokijir.pdfIn PDF document text
    • https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1614f3bce43fc0---70024176409.pdfIn PDF document text
    • http://asu.com.vn/wp-content/plugins/super-forms/uploads/php/files/sbmpqcpr7eidr09k43rvg4vpg1/73511486466.pdfIn PDF document text
    • http://sz-nuoyi.com/Upload/file/2021092903343414024.pdfIn PDF document text
    • http://orderleesushi.com/uploads/files/rasesotew.pdfIn PDF document text
    • http://a-pro-peau.fr/userfiles/file/37880240093.pdfIn PDF document text
    • http://vinhthuan.vn/upload/files/31665563313.pdfIn PDF document text
    • http://bualuang101.com/backoffice/upload/files/luvesidofifakana.pdfIn PDF document text
    • https://abcoegypt.com/userfiles/files/29104439353.pdfIn PDF document text
    • http://xn----dtbsgbucafmmaf.xn--p1ai/servimages/editor/files/sosatesi.pdfIn PDF document text
    • https://manage3.realtourvision.com/rtv/ckfinder/userfiles/images/files/20709027817.pdfIn PDF document text
    • http://80tner.netsociality.com/upload/files/texegutoxidowutu.pdfIn PDF document text
    • https://christianschoch.ch/userfiles/file/30057079591.pdfIn PDF document text
    • https://profipreklady.cz/www/ckfinder/userfiles/files/23091020884.pdfIn PDF document text
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135bd2e93a9e---73085644195.pdfIn PDF document text
    • http://1qjd.com/upload/files/2021-09-20-05-29-43-qgGrYmb2.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=the+way+of+kings+descriptionPDF 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_off0000b1b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1B6 14752 bytes
SHA-256: d59085b53109e243a455b5a60522ddcbb4b379b52d1088a2b3be7341d2ad8b17
font_01_sfnt_off0000d6e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6E9 11108 bytes
SHA-256: bcd2b3351a4764a70f86e1f77aaa298ff293726f939709d0badc3207caf08094
font_02_sfnt_off0000f0b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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