Malicious PDF — malware analysis report

Static analysis result for SHA-256 e05a801eec3f8cf4…

MALICIOUS

PDF

37.7 KB Created: 2021-07-04 00:44:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: d97f64fbdb58f4cbdfd1368852ba1e77 SHA-1: 754e18c0d3ba037931678f6804d5a3be4dc3afe1 SHA-256: e05a801eec3f8cf42849f2d08eb14c6e46494a0d3bcd26914f2421a5b55d093a
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 0.9981

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/rblx-gg-free-robux-game-hack PDF link annotation
    • http://library.smpn2-byl.sch.id/repository/names-of-roblox-hack-scripts_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/free-coin-spin-daily-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/how-to-make-your-own-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/wwwcoin-master-free-spincom_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/roblox-play-as-guest-free_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id/repository/how-to-hack-every-game-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id/repository/free-robux-generator-op_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/roblox-rewards-site_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/free-mods-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id/repository/tower-battles-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/spin-rewards-coin-master_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/rewardrobux-com_GM431946152.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/free-rewards-coin-master_GM406889139.pdfIn PDF document text
    • http://library.smpn2-byl.sch.id//repository/free-robux-co_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_off00003bae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3BAE 23144 bytes
SHA-256: 8dca3b6008b7719f1cc31cb19e5105e1eb0c64632d1826fba7ed30d33cca3bf0
font_01_sfnt_off00006f40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F40 18788 bytes
SHA-256: 5272de1327d809a9ae728a26cc0e875a9c13a139e68b1b71e833ab0b807ac84b

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