Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e014d85e494aabc…

MALICIOUS

PDF

46.6 KB Created: 2021-06-09 06:54:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 7518ea4a0a85555818e38f32f50263ff SHA-1: 0102eacd2faa24bc86f1b2735b4cd55e09f1b0e5 SHA-256: 6e014d85e494aabcd769134ecad5293d56e997096d38682ae2fca4bb17de44cc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to malicious redirectors, disguised as game hacks and generators, which is a common lure for phishing or malware distribution. The document body and embedded URLs strongly suggest a social engineering tactic to trick users into clicking malicious links. While no scripts were explicitly extracted, the nature of the PDF and its embedded links indicate it's designed to lead the user to a malicious website, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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 https://netcdn.tw/app/431946152/how-to-hack-roblox-2021-cheat-engine-game-hack In PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-gfx-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-cheat-engine-fix_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/your-cheating-on-your-roblox-girlfriend-meme_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-spins-coin-master-links-no-human-verification_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-hack-here_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-generator-cheat_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-sexually-abused_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-moderators_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-roblox-executor_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coinmasterfreespinlink_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/is-roblox-studio-free_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-game-hunter_GM406889139.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_off00005386.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5386 26408 bytes
SHA-256: 26e7433c2ba091c2f1a1021a6761a02b1b1b4d8b6f4ae214cd73048a1ba18e53
font_01_sfnt_off0000900d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x900D 19428 bytes
SHA-256: a7f4b4d523415aa31f3ee8f1b3544b1a982606a94baaa92680f644a4e2a36713

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