Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8c8c1f0638f2855…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 19:22:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 48a0d51f1f3a1832fdcaa2ee846e0686 SHA-1: 69e94f30d46726c82347392b31e52067626531de SHA-256: e8c8c1f0638f2855790289dfb9c04bd3525341c12bf8f59f4d6c25435e404503
160 Risk Score

Malware Insights

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

This PDF document contains multiple links to known malicious redirectors, specifically advertising game hacks and free currency for popular games like Coin Master and Roblox. The primary redirect URL is http://netcdn.tw/app/406889139/coin-master-computer-hack-game-hack, which likely serves as a lure to download further malicious content or exploit vulnerabilities. The document body and embedded URLs confirm the social engineering pretext of offering game-related cheats.

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-computer-hack-game-hack In PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/coin-master-free-link-app_GM406889139.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/roblox-c9m_GM431946152.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/pubg-uc-lebanon_GM1330123889.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/free-robux-secret-video-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/minecraft-images-free_GM479516143.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/roblox-free-login_GM431946152.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/roblox-how-to-get-free-robux-and-obc_GM431946152.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/free-spins-and-coins-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/minecraft-pe-server-hosting-free_GM479516143.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/coinmasterhack-club_GM406889139.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/free-roblox-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min1sleman.sch.id/__statics/gudangsoal/files/roblox-admin-commands-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

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
stream_002_off000032f0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32F0 22224 bytes
SHA-256: ee252065e11251d49ced52948da9dcd9dc0c192d2c4a4c2d203434809279d14d
font_01_sfnt_off00006455.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6455 18580 bytes
SHA-256: 497b785ebba59e7ca707536904f047f4e5286b620765a069de1dcc264aa1dd4d

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