Malicious PDF — malware analysis report

Static analysis result for SHA-256 38dec5bced9cbfe8…

MALICIOUS

PDF

47.3 KB Created: 2021-06-03 10:46:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5d24ef1b53ed2659054c229b1cd0f5b3 SHA-1: 3d91f64652eafd84ab1786527ac9b7fbee2b4c22 SHA-256: 38dec5bced9cbfe84a19c0acac98fb808a24518f490b0d911cdaf3ef27519f12
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 0.9769

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 https://netcdn.online/app/406889139/legit-free-spins-coin-master-game-hack PDF link annotation
    • http://abdinusababellibrary.ac.id//repository/scary-larry-roblox_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id/repository/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/need-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/coin-master-20-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/coin-master-free-spin-app-2021_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id/repository/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-roblox-hair-boy_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/update-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/pokemon-go-free-candy-hack_GM1094591345.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005090.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5090 25780 bytes
SHA-256: c12305179c4fdb7c8a93b5273f28b6defe3d6f9c76cc8941bc61ab2416666ad3
font_01_sfnt_off00008c91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C91 2868 bytes
SHA-256: 00109425b76763440a5569341faade0445b3c9f8514523a6f287fddbc9082efe
font_02_sfnt_off0000967e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x967E 18176 bytes
SHA-256: 0e4f5fc6ff2fec7c34f7a60300b1fa14fa22cd043badad59a9fad54dc28be7cf

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