Malicious PDF — malware analysis report

Static analysis result for SHA-256 89609a67e798e5ee…

MALICIOUS

PDF

34.8 KB Created: 2021-07-06 07:44:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 26560f34c62659441193717fd5516342 SHA-1: 5d3360ae5fd01125914a62295aef4c36659f1a3f SHA-256: 89609a67e798e5ee858fc95351d16fe6f34a19c6f397c7fce00f21d1e172b813
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/apps-to-get-free-robux-game-hack PDF link annotation
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/roblox-hacks-no-down-load_GM431946152.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/is-roblox-free-on-ps4_GM431946152.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/free-robux-no-waiting-pastebin_GM431946152.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/earn-robux-today-earn-robux-today_GM431946152.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/coin-master-free-spons-apk-2021_GM406889139.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/robux-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/free-robux-apk_GM431946152.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/how-to-get-free-roebucks-without-verification_GM431946152.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/microsoft-store-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/roblox-free-cookies_GM431946152.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/roblox-hacked-accounts-list_GM431946152.pdfIn PDF document text
    • https://www.elearning.misalhasyimiyahjkt.sch.id/__statics/gudangsoal/files/roblox-exploit-download-free-no-virus_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_off00003362.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3362 21732 bytes
SHA-256: 2164af9a81feba70016b25793c02b8650a6fc812e7bbe2f6a353123bcd405bc3
font_01_sfnt_off0000631b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x631B 18996 bytes
SHA-256: 5c2d20fe84271232cdb725bf1ee573f6c2a82921a8e85a5edc805d3c36d3e91e

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