Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a2c420204524385…

MALICIOUS

PDF

36.5 KB Created: 2021-07-05 16:46:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: a514d90671ad0b5e942c0ffc3328af0a SHA-1: 48ee1ee91976033ed3e93e03512f30253388a7dd SHA-256: 6a2c4202045243856027331dcc3d8a37ce241cd2d30459c6d43c3aa0c95ce863
160 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a game hack lure, linking to a known malicious redirector. The document body and embedded URLs reinforce this theme, aiming to trick users into visiting the malicious site. While no scripts were extracted, the PDF structure and embedded links strongly suggest an attempt to redirect users to malicious content, likely for further exploitation or phishing.

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/406889139/coin-master-hack-without-verification-code-game-hack In PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/how-to-win-robux_GM431946152.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/minecraft-pe-hack-client-ios_GM479516143.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/coin-master-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/robux-hack_GM431946152.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/free-coin-master-spin-generator_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/how-to-get-minecraft-for-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/free-roblox-avatar-ideas_GM431946152.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/download-coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/links-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/roblox-hair-for-free_GM431946152.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/free-robux-live_GM431946152.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/roblox-online-free_GM431946152.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/coin-master-links-for-free-spins-2021_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_off000037f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37F2 22644 bytes
SHA-256: 8a227030d32b123f1f09df9b9346dbac15742fe6df42e7eb96275cf720a889f6
font_01_sfnt_off00006a58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A58 18816 bytes
SHA-256: a9e0a618903bb392e01413f9b152c22796f511f28b171904dea730d40abc975b

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