Malicious PDF — malware analysis report

Static analysis result for SHA-256 255387e82db19859…

MALICIOUS

PDF

33.9 KB Created: 2021-07-03 14:44:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 949b06d51394bd992696991cad9e2dc0 SHA-1: 428cb7252dbd89e502d6943d95c36b14427c204e SHA-256: 255387e82db198591561e41fa349abeca46310ca9eaf44f87c3acfc4d859557b
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-do-i-get-free-robux-game-hack PDF link annotation
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/grab-robux-for-free_GM431946152.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/coin-master-link-daily-get-free-spins-amp_GM406889139.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/coin-master-free-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/app-store-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/free-printable-roblox-invites_GM431946152.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/pokemon-go-free-accounts-2021_GM1094591345.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/coin-master-33-hack-version-download_GM406889139.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/hack-coin-pro-coin-master_GM406889139.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/how-to-get-free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/free-spins-coin-master-october-13-2021_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
font_00_sfnt_off00002fc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC0 21496 bytes
SHA-256: b2e0806c0b7450da0a8abe0bf99a751380d458feec6c6dd4d7e96e5b90ac2a1d
font_01_sfnt_off00005ee9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE9 19152 bytes
SHA-256: dbadd7ca2f39853e1d628412f433763acd544662f92d7d1ac8e48e35ccd177e9

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