Malicious PDF — malware analysis report

Static analysis result for SHA-256 2babf9edc0c32158…

MALICIOUS

PDF

76.3 KB Created: 2021-09-19 02:03:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: a6a89825b6d0cc50384e10913fa25236 SHA-1: aa9d6d2de451883d00ffd55e4deb087765429517 SHA-256: 2babf9edc0c3215828c5973bdd73941a296f556c6883aa0f2df8be548060b0f3
204 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by ML classifiers and ClamAV as malicious. It contains embedded JavaScript and a link farm pointing to compromised WordPress sites, suggesting it's designed to host or distribute further malicious content. The critical finding is the 'Clipboard command execution lure' heuristic, indicating the document instructs users to copy and paste commands into a shell, a common technique for executing downloaded payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/16146664b1fb10---72427096560.pdf In PDF document text
    • http://autosvilar.com/uploads/ckfinder/files/91853992909.pdfIn PDF document text
    • http://flirtproducties.nl/ckfinder/userfiles/files/nafazifuxisep.pdfIn PDF document text
    • http://joesservicecenternj.com/userfiles/files/2403698106.pdfIn PDF document text
    • https://vwb.mrv-educationservices.com/content_file/files/22574543276.pdfIn PDF document text
    • http://www.39koratmachinery.com/file_upload/files/47049315295.pdfIn PDF document text
    • http://xiangzhuan.tw/upload/files/tubig.pdfIn PDF document text
    • https://egokituz.eus/files/galeria/files/97588028429.pdfIn PDF document text
    • https://empezo.xyz/js/ckfinder/userfiles/files/30052306820.pdfIn PDF document text
    • https://ruta.hu/ckfinder/userfiles/files/80650919131.pdfIn PDF document text
    • https://ysh.my/userfiles/file/ronukizojiwideregijom.pdfIn PDF document text
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613eb5b496e93---vikepenetunezeruvivase.pdfIn PDF document text
    • https://songhongresort.com/img/files/vujopoziles.pdfIn PDF document text
    • http://dreiseengrundschule.de/files/82948959710.pdfIn PDF document text
    • http://www.pattyn360.com/upload/forum/files/firuf.pdfIn PDF document text
    • http://lamgi.pl/ckfinder/userfiles/files/puwut.pdfIn PDF document text
    • http://ljjxmining.com/uploadfile/file///2021090716492491.pdfIn PDF document text
    • https://123natura.com/stockages/files/kabibezeten.pdfIn PDF document text
    • https://bank-kredit.at/ckfinder/userfiles/files/26058063892.pdfIn PDF document text
    • http://awarelaxcentrum.cz/user_files/file/webuxilenexedibogi.pdfIn PDF document text
    • http://goteneplast.se/files/images/file/83623369165.pdfIn PDF document text
    • https://pchome.uzai.ca/upload/files/28563200882.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/blh9fet6jtld6p0m0082rolau3/11486532577.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=iso+15693+androidPDF 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_off0000bb14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB14 10608 bytes
SHA-256: e77a1cd44313036249e383359c7192a6b2f0f747c5a739f08919c7de953bb2b3
font_01_sfnt_off0000d369.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD369 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000eb7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB7B 21536 bytes
SHA-256: 8888cb9be4db08df731d5f2f9acc6b070b733c702ca213d7eee6dad65a615d3d

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