Malicious PDF — malware analysis report

Static analysis result for SHA-256 2700abdad2113da7…

MALICIOUS

PDF

89.8 KB Created: 2021-09-19 17:38:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-27
MD5: 0a07d8b54a8f7085ace2186c8996ccbd SHA-1: 257326657a3697baf415a292d21422b223f5157c SHA-256: 2700abdad2113da7cbb0c1bcec9a4f88baf3a27f0fe690900a667c473886d955
196 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a 'Clipboard command execution lure' heuristic, indicating it instructs the user to interact with the clipboard in a way that could lead to command execution. The document also contains numerous external URIs, some pointing to compromised WordPress upload storage, suggesting it may be part of a phishing or malware distribution campaign. No scripts were extracted, but the overall behavior points to a downloader or phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 7

  • 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.
  • 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://krisoc.ru/uplcv?utm_term=division+symbol+copy+and+paste PDF link annotation
    • https://speak82.com/_UploadFile/Images/file/9419867285.pdfIn PDF document text
    • http://bharatdarshan.net/rgroup/ckfinder/userfiles/files/xiwekoxoxukozagimadapit.pdfIn PDF document text
    • https://sammycar.ch/sammy/sites/default/sammyfiles/newsletterfile/97190601082.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/b8iqkhlfe93r4rhrsiiekgspq1/74247945050.pdfIn PDF document text
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613431542cf4b---mapawulolugepezapifasas.pdfIn PDF document text
    • https://piti.leaddeehub.com/userfiles/files/73424253633.pdfIn PDF document text
    • https://aldwalia.com/userfiles/files/64142593678.pdfIn PDF document text
    • http://nkmate.com/FileData/ckfinder/files/20210906_281FAF633C769053.pdfIn PDF document text
    • https://vibangthuaphatlai.net/uploads/files/zuwaxuzadixofar.pdfIn PDF document text
    • http://cmtsport.com/pliki/banivetanevibebesoka.pdfIn PDF document text
    • https://cfi-registration.org/buzzboxgift/img/userfiles/files/durikirotinotigadub.pdfIn PDF document text
    • http://lingeriedediva.com/UploadFile/file/2021091400254673499.pdfIn PDF document text
    • http://kronospan-mofa.hu/editor_up/vofurikezakurejebamut.pdfIn PDF document text
    • http://tobn56.com/UpFiles/file/lalixenidekiwuvo.pdfIn PDF document text
    • https://innovaciones-plasticas.com/imagenes_cont/sitio/documentos/13923683086.pdfIn PDF document text
    • http://jikaramen.com/uploads/files/moxakarajura.pdfIn PDF document text
    • http://diagcorlifescience.com/attachment/file/pobogozibidawuv.pdfIn PDF document text
    • https://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/16136a439528c7---novikakuziveneduvoxe.pdfIn PDF document text
    • http://primebrokeragetx.com/ckfinder/userfiles/files/28530041480.pdfIn PDF document text
    • https://budapestpainter.hu/ckfinder/userfiles/files/37122398054.pdfIn PDF document text
    • http://hyundaihungthinh.com/uploads/images/files/fenumaxogitevuwaragaroj.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/16131c51aa6a2e---7358697426.pdfIn PDF document text
    • https://aadhaarretail.com/administrator/imagetemp/file/pafavir.pdfIn PDF document text
    • http://mustang.tom.ru/jsplugins/ckfinder/userfiles/files/pulewet.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_off0000edb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDB9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000105d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105D0 10896 bytes
SHA-256: 1e04ac62bc15d77ce028e3607c44ac7dec6eac4883eb04d6205a6fbbb3c0deb9
font_02_sfnt_off00011ed9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11ED9 22664 bytes
SHA-256: dc07e6c87c51c138c531ac2852ec7db78f910309919fb951f2ad37715357ef4f

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