Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4edbe29fca628f1…

MALICIOUS

PDF

45.1 KB Created: 2021-06-03 19:44:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 271161554178210b2e337d2c9e01e816 SHA-1: ce45e2572efaf668b4351a298eb484d378c2b85c SHA-256: e4edbe29fca628f1ccff65dc476731da5f3be7883b70b3ae15373fd4b75681d1
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 0.9865

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/406889139/coin-master-firebird-card-free-game-hack PDF link annotation
    • http://library.gkigadingserpong.org/repository/aimbot-exe-roblox_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/www-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/static-moonactive-net_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-free-hair-codes_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-fan_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-free-spins-usa-2021_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/robux-converter_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-minecraft-server-maker_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-online-hack-link_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/minecraft-login-free_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-monster_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/pokemon-go-free-promo-code_GM1094591345.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_off0000529e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x529E 24416 bytes
SHA-256: 9c1f1c09bf65f6a6f1e91c1b5d7cca11e59e896e0c0cbdda6c643be2d046ff04
font_01_sfnt_off00008ac3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AC3 19196 bytes
SHA-256: 867daf66138a7c515fb4c10f2b719afb192fefe96bbfba6b72f2d6feb9276e08

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