Malicious PDF — malware analysis report

Static analysis result for SHA-256 c82d1f653464a07f…

MALICIOUS

PDF

34.2 KB Created: 2021-07-04 09:25:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: e3e58d94175e498fc4b2a83d35441f4a SHA-1: e2f845ead68417a8edc883c184f0a147eba84ca9 SHA-256: c82d1f653464a07f616dfe568bb96838bb094063d95f79d770ffa165b85d1944
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a critical heuristic firing for a game hack redirect lure, pointing to malicious infrastructure. The embedded URL and document body text reinforce this, indicating a social engineering attempt to trick users into visiting a malicious site. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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.tw/app/431946152/how-to-get-free-bc-for-roblox-game-hack In PDF document text
    • http://digilib.stimlog.ac.id/repository/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/download-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/get-roblox-tickets-free_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-hack-accoutns-on-roblox-october-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/como-tener-robux-gratis-con-hacks_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-hack-tool-without-human-verification_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-home_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/hack-blox-piece-roblox-give-mod-menu_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/minecraft-free_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-no-survey-no-download-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-download-minecraft-for-free-on-windows_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/is-coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-free-coins-on-assassin-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-hack-tool-exe_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/rbxoffers-com-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-roblox-website_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-hack-roblox-2021-easy_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/watch-a-video-for-free-robux_GM431946152.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_off000030b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30B4 21804 bytes
SHA-256: 38cf6060d690a2592cbb1149e64f1891ae371931308d3d555c6427cfe9e623cd
font_01_sfnt_off000060bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60BC 18920 bytes
SHA-256: 65ca0f233dbb1d94fd97eb072117d75978018ec39f62f1034bfba71ed1ce28ac

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