Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c4fe0ca606b20a6…

MALICIOUS

PDF

34.0 KB Created: 2021-07-05 15:48:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 50c61a894cc6bb5b2d65ab6459f35ea0 SHA-1: 1c49190b240cda15541d4f85f49dfc92d1e60b17 SHA-256: 8c4fe0ca606b20a6fdb4968c22f92aeb713efa6fe0236ae103c7bf577368c300
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/how-to-hack-a-roblox-server-2021-game-hack PDF link annotation
    • http://psb.sd-alazhar29.sch.id/repository/app-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-1-click_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/fake-robux-codes_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/5-dollar-roblox-gift-card-free_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coinmaster-twitter_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/best-roblox-exploits-free-v3rmillion-november-2021_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/get-free-robux-info_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-accounts-roblox-2021-september-2021-live_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/earn-robux-sites_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-bc-robux_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-minecraft-thumbnails_GM479516143.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/roblox-exucutor-free-download-2021_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/pants-free-roblox_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/can-i-get-robux-for-free_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_off00002ec0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EC0 21772 bytes
SHA-256: 0bebaa326720503b3236b0c81c5cb647251670a36af5155b41ad0092d23dfae0
font_01_sfnt_off00005e95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E95 19336 bytes
SHA-256: e5160c7769adf2323b3c58188f1092fac752cdb4c076c23a542b6cd40d245ff1

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