Malicious PDF — malware analysis report

Static analysis result for SHA-256 923fe0d67627bb46…

MALICIOUS

PDF

32.6 KB Created: 2021-06-25 02:25:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 82f722555d8c878abff56c98e73a6bee SHA-1: 011d77f67a19be0db508ee716870558a67c5fa8a SHA-256: 923fe0d67627bb4619b0421ecc7290067c24e0438554bf8ecf49f3bfc485ebdc
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and text referencing game hacks and free currency for popular games like Roblox and Coin Master. The primary link, http://netcdn.co/app/431946152/booga-booga-hacks-roblox-game-hack, is flagged as a lure for game hacks. This suggests the document is designed to trick users into visiting a potentially malicious site that could lead to malware downloads or phishing. No scripts were extracted, but the document's structure and embedded URLs strongly indicate a social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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.co/app/431946152/booga-booga-hacks-roblox-game-hack PDF link annotation
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/coin-master-hack-ios-no-verification_GM406889139.pdfIn PDF document text
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/roblox-books-online-free_GM431946152.pdfIn PDF document text
    • http://elearning.min13bm.sch.id/__statics/gudangsoal/files/coin-master-level-4_GM406889139.pdfIn PDF document text
    • http://elearning.min13bm.sch.id/__statics/gudangsoal/files/robux-rewards_GM431946152.pdfIn PDF document text
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/free-spin-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://elearning.min13bm.sch.id/__statics/gudangsoal/files/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/coin-master-support_GM406889139.pdfIn PDF document text
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/coinmaster-spin-ml-free_GM406889139.pdfIn PDF document text
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/how-to-find-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/coin-master-free-spin-links-december-30-2021_GM406889139.pdfIn PDF document text
    • http://elearning.min13bm.sch.id/__statics/gudangsoal/files/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • http://elearning.min13bm.sch.id/__statics/gudangsoal/files/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.min13bm.sch.id/__statics/gudangsoal/files/free-robux-cards_GM431946152.pdfIn PDF document text
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://elearning.min13bm.sch.id/__statics/gudangsoal/files/free-pet-food-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.min13bm.sch.id/__statics/gudangsoal/files/free-realistic-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/coin-master-hack-unlimited-spins-apk_GM406889139.pdfIn PDF document text
    • http://elearning.min13bm.sch.id/__statics/gudangsoal/files/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • https://elearning.min13bm.sch.id/__statics/gudangsoal/files/coin-mster-free_GM406889139.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_off00002af5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AF5 21996 bytes
SHA-256: 9db2c4c103756edcb80cf2b5a357bd55cc88fd48b33ba2358c02e904910f7fae
font_01_sfnt_off00005bc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BC5 18656 bytes
SHA-256: 5bb4a74e3ecbc1e0a3328f85f13d606e7f0522f32bad2bf8b3d94f76cf1b922e

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