Malicious PDF — malware analysis report

Static analysis result for SHA-256 02da43baab940974…

MALICIOUS

PDF

52.3 KB Created: 2021-06-03 07:35:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: cad674b08dd101271e94037039a669e9 SHA-1: c4009b34ed2b36a26f6f53b33666d9d4c23962ab SHA-256: 02da43baab94097482a9431da5c4b9576e41395682fe9d2cef4544e67fae7990
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 0.9850

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.online/app/431946152/free-robux-card-codes-game-hack PDF link annotation
    • http://pustaka.smpmuh2yk.sch.id//repository/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/coin-master-unlimited-spin-hack-apk_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/google-moon-active_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/games-like-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/paytm-to-pubg-uc_GM1330123889.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/coinmaster-twitter_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/master-free-spin_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/robux-scam_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/clean-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/50-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/coin-master-free-spin-software_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
stream_004_off00005560.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5560 38372 bytes
SHA-256: 39b5af9b687c4760f89103efd52856c75cfec88c5794507c997a8a2a2e7f9814
font_01_sfnt_off0000a9fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9FE 18416 bytes
SHA-256: 79c56a0f23d4fc34690a575a065be14b64911c3c5a3331038291264b4b7107af

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