Malicious PDF — malware analysis report

Static analysis result for SHA-256 405a20e16b4196f4…

MALICIOUS

PDF

35.7 KB Created: 2021-06-19 02:49:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 96c8ea9938006852f886047784cf1096 SHA-1: 56c3770ffaa1a89c1ad5771d90f524c6e990aa67 SHA-256: 405a20e16b4196f425a89f81af45d83ce2063bb591faa5270a4a25f436019ac3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacking to redirect users to malicious infrastructure. The embedded URLs, such as http://netcdn.co/app/431946152/how-to-hack-admin-on-any-roblox-game-game-hack, are associated with known malicious redirectors. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a malicious redirector designed to deliver a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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 http://netcdn.co/app/431946152/how-to-hack-admin-on-any-roblox-game-game-hack In PDF document text
    • http://razredna-nastava.net/files/roblox-executor-free_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/does-coin-master-hack-work_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/coin-master-hack-version_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/coin-master-hack-cydia_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/how-to-speed-hack-using-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/hack-version-of-coin-master_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-coins-for-coin-master-blogger_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/identity-fraud-roblox-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/www-free-robux_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/mcpe-hacks_GM479516143.pdfIn PDF document text
    • http://razredna-nastava.net/files/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000337b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x337B 22356 bytes
SHA-256: 501784b4679c02f8c61ba8b5984c2598748444c093dc2dbf3ea8d12712e6574d
font_01_sfnt_off000064dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64DD 19552 bytes
SHA-256: 60b28ad4d1e1aa45414c51993a8c128c5f5082b0335d026dd1895805d51227c1

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