Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7dc3e4cfb60fe35…

MALICIOUS

PDF

43.8 KB Created: 2021-05-11 04:16:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: faed51a7a7cbf7c549e9567a9fbc7745 SHA-1: 9c99de7113a4ec5c0d8303287c49476bf62d4aee SHA-256: e7dc3e4cfb60fe3572bc3828b85a338b8a86e8c0f18bc11839796bb0d389b710
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded links, with a primary lure pointing to a 'game hack' generator. The heuristic 'SE_FAKE_CAPTCHA' indicates the document likely presents a fake verification prompt to trick the user into interacting with the malicious link. The presence of embedded JavaScript, though not directly analyzed for specific actions, supports the potential for malicious behavior initiated by clicking the link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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.xyz/app/406889139/hack-spin-coin-master-2021-game-hack PDF link annotation
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/easy-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/how-to-get-free-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/roblox-shirt-template-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/free-robux-place_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/dominus-roblox-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/free-spins-coin-master-links-no-human-verification_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/coin-master-facebook-page_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/stock-speed-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/roblox-hack-game_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnurulislamblc.sch.id/__statics/gudangsoal/files/free-minecraft-codes_GM479516143.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_003_off00004a2b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A2B 23276 bytes
SHA-256: fa0663b760ca549719b2a1d48474ef2e1abb13102fc91e3bf6deda61bca42ccb
font_01_sfnt_off00007e83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E83 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off0000886e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x886E 18296 bytes
SHA-256: 7c152fcbec6031fae265a28d35039b65ee2a7a9d607d67cc07384d82b99704d1

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