Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b96ff2991a275f8…

MALICIOUS

PDF

45.6 KB Created: 2021-06-09 08:36:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 56dc51176de817d11f930a58b6afaac7 SHA-1: 6c112b6fb3cd4d01947e707c22b15bcb273de236 SHA-256: 6b96ff2991a275f855ffb70f27a0a83ba71383b6627f221d171f61a4fbe7e55c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirector lure, pointing to malicious infrastructure. The document body and embedded URLs reinforce this, indicating a social engineering attempt to trick users into visiting a malicious site. While no scripts were extracted, the PDF's structure and embedded links strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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/roblox-royale-high-cheats-for-diamonds-2021-game-hack In PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spins-link-ios_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/robux-games_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-in-roblox-jailbreak-speed_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-hack-tool-access-online-generator_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-coin-spin_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spins-and-coins-for-iphone_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/robux-com-free_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/gameoffice-net-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/who-tiktok-free-followers_GM835599320.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-coins-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/all-coin-master-spin-link-and-free-download_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/gain-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/inappropriate-roblox-games-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-do-you-get-roebucks_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/haktuts-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-facebook-page_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000051cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51CF 24844 bytes
SHA-256: 53edd2f50e671c818d921a9fa1aef8f92e5ec527a5e95bbde19909abd65ffd60
font_01_sfnt_off00008a3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A3D 20036 bytes
SHA-256: c727e74037e3cdb02778e8d8b7a78aad7b1a1e0156572ebf5467a40fffa3bb1c

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