Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc3d62d24c68a0b2…

MALICIOUS

PDF

34.5 KB Created: 2021-07-03 12:50:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: a613b448cb30ba8670546dc9e4ad9c7b SHA-1: 09960c724af5b056651d8860454f1572b5183f42 SHA-256: cc3d62d24c68a0b2a2fff78b67ebdb70eb1ec62cbaa70c310ba6e45a7a381fdb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The primary URL, http://netcdn.tw/app/406889139/coin-master-free-spins-2021-game-hack, is flagged as malicious. The document body and embedded URLs indicate a social engineering tactic to trick users into visiting potentially harmful sites.

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-free-spins-2021-game-hack In PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/coin-master-20-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-using-rblx-gg_GM431946152.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/ww-robux_GM431946152.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/stylish-animation-pack-roblox-free_GM431946152.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/redeem-robux-card-free_GM431946152.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/free-robux-quiz_GM431946152.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/lumber-tycoon-2-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/moonactive-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/mm2-roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-access-online-generator_GM406889139.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/tiktok-free-4k_GM835599320.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/how-to-put-hack-script-to-roblox-parkour_GM431946152.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/secret-roblox-hack-revealed_GM431946152.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/coin-master-facebook-page_GM406889139.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/free-robux-com-roblox_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_off00003119.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3119 22452 bytes
SHA-256: ac783336d73184a3bcdea143ec7e53778ab89013bb85a300c992e98e36c775ab
font_01_sfnt_off00006307.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6307 18576 bytes
SHA-256: a126babb65047b6746617d7d7f27a00b485a4a24246b96e57b4b97a03add53e0

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