Malicious PDF — malware analysis report

Static analysis result for SHA-256 2de796ba99eb2a38…

MALICIOUS

PDF

42.2 KB Created: 2021-05-14 20:09:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 22527b17bd724cf78072995a05b12831 SHA-1: a9f62ff7987e370d07d69d6107ed1127fb93f976 SHA-256: 2de796ba99eb2a38f549d666da4cad2f48288dbaf185b58c9403511177cf8a32
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 0.9971

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.xyz/app/431946152/free-roblox-generator-game-hack PDF link annotation
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/how-to-get-free-shirts-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/free-coin_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/daily-free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-april_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/coin-master-free-spin-link-daily_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/is-roblox-free-on-xbox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/roblox-login-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/real-working-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/easy-way-to-get-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/get-free-robux-today_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/roblox-account-hacker-tool_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1bkt.sch.id/__statics/gudangsoal/files/are-minecraft-realms-free_GM479516143.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
stream_003_off000047f9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47F9 26724 bytes
SHA-256: 7e0ff5d3b61891e33b1d60309f7f87d9136038a89ada6b0ecea2a5bcace5bac5
font_01_sfnt_off0000828a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x828A 18280 bytes
SHA-256: a933d21998376b1e1789d4c480c6983ef3f135197d1bc74c37b8b8f8713ff5e6

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