Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d3d39b1e7f44215…

MALICIOUS

PDF

85.6 KB Created: 2021-09-11 06:36:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 367d800465085dc40b57d886c8732846 SHA-1: 05bbc3a3a67daf216c8e256a2a6dd2c8a662b7b9 SHA-256: 7d3d39b1e7f44215c111387bf65997f0b004a422ae1525f9f010a2ae36085034
182 Risk Score

Malware Insights

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

This PDF document was flagged by a machine learning classifier and ClamAV as malicious. It contains embedded JavaScript and multiple external URIs, suggesting it's designed to download and execute a second-stage payload. The 'Clipboard command execution lure' heuristic indicates the document instructs the user to copy and paste content, a common tactic to bypass security measures and initiate malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://shoppingplanet.ro/ckfinder/userfiles/files/2034062531.pdf In PDF document text
    • http://aeklaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/60873198956.pdfIn PDF document text
    • http://szjwwj.com/userfiles/file///54497027794.pdfIn PDF document text
    • http://cpk.by/ckfinder/userfiles/files/jojubejirojetodajonu.pdfIn PDF document text
    • http://kraemer-duennebacke.de/files/file/wivumevorikebufojonijugas.pdfIn PDF document text
    • http://espacioschillout.es/images/admin/file/41697004693.pdfIn PDF document text
    • http://rc-saty.cz/gais/image/file/wavijuxanatukilubezo.pdfIn PDF document text
    • https://dukeofmarshall.com/ckfinder/userfiles/files/vofamopif.pdfIn PDF document text
    • http://michellenevinracing.com/FCKeditor/file/jikonudajotulerer.pdfIn PDF document text
    • http://tv-sat.cz/userfiles/file/vozunapixosatajipujewuni.pdfIn PDF document text
    • http://www.ville-civaux.fr/admin/js/ckfinder/userfiles/files/85977495393.pdfIn PDF document text
    • https://tepatsasaran.com/contents/files/nepelebugekoxuzib.pdfIn PDF document text
    • http://www.tiande-global.com/ckfinder/userfiles/files/roxege.pdfIn PDF document text
    • https://megatex.ua/images/uploads/file/13706359695.pdfIn PDF document text
    • http://alarcon-v.com/editor_upload_image/file/rerilase.pdfIn PDF document text
    • https://magiccat.pro/ckfinder/userfiles/files/32467482852.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/161350760c0cc4---toxosudusewuvototimu.pdfIn PDF document text
    • https://prtl.pl/userfiles/file/kobajalivixus.pdfIn PDF document text
    • http://espicycooking.com/files/file///2707518462.pdfIn PDF document text
    • http://word.mn/uploads/assets/35301959488.pdfIn PDF document text
    • http://writtenmail.com/upload_images/file/60837028302.pdfIn PDF document text
    • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613146ecee163---dikiron.pdfIn PDF document text
    • https://dampinggame.com/calisma2/files/uploads/21564586095.pdfIn PDF document text
    • https://nakatarikaszel.pl/app/webroot/userfiles/file/28266766155.pdfIn PDF document text
    • https://taucaotoccatba.vn/images/news/files/tasegibowubijotar.pdfIn PDF document text
    • http://market-oborudovanie.ru/upload/file/sesuraxete.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=android+fastboot+recoveryPDF 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_off0000ea62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA62 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010274.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10274 17512 bytes
SHA-256: 207b78d323b5d049e2bbb24fbe73919ce3aaa6d9ba45f5961e09d429917f5003
font_02_sfnt_off00012fca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FCA 10724 bytes
SHA-256: d9e0fbc81e6b74f24092177bbd40ab773cffbba203d14b8996f6b537e7a9cd52

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