Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb84ea5fdab720b8…

MALICIOUS

PDF

35.4 KB Created: 2021-07-04 22:01:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 1e9ccd161b0768ca417bfce244c7a242 SHA-1: 1af56c42bf67bd6de094c5417bf75920f66ccd98 SHA-256: bb84ea5fdab720b8d2da2f7a08a787dd903d41dcfd6cd1a155c43ced87127de6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/431946152/code-free-robux-game-hack PDF link annotation
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/roblox-hack-siteleri_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/hackaron-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/install-free-game-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-35-18_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/free-pink-hair-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/coin-master-cheat-codes_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/da-hood-roblox-free-dowlond_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/real-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/robux-scam_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/roblox-lumber-tycoon-hacks_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • https://e-learning.mtsn6-cirebon.sch.id/__statics/gudangsoal/files/roblox-jailbreak-hack-speed_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_off00003242.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3242 23064 bytes
SHA-256: 4adf0aae9364f75302f03d4eacb373712e5562a8bf05efec53ba7f0c71cb7780
font_01_sfnt_off000065f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65F9 18888 bytes
SHA-256: e09a92444fffebeeb998468a77a403de4618986c60ca4254348b93199fa305b2

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