Malicious PDF — malware analysis report

Static analysis result for SHA-256 931c600df82bad32…

MALICIOUS

PDF

34.1 KB Created: 2021-07-01 17:44:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 9f48cb131b22a772fdcdac57a83014a3 SHA-1: a9a13d8e0770099c4a060f7f2f65cc3c4732f811 SHA-256: 931c600df82bad32a2701e6f76d4e31c12d1e7efd1faab90f72f80756a216586
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of 'free game hacks' to entice users into clicking embedded links. The primary link, http://netcdn.co/app/431946152/robux-free-hair-2021-game-hack, and numerous others hosted on daskrimti-jabar.web.id, likely lead to malicious websites designed for phishing or malware distribution. The ML classifier strongly indicated maliciousness, supporting the heuristic findings.

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.co/app/431946152/robux-free-hair-2021-game-hack PDF link annotation
    • http://daskrimti-jabar.web.id/library/repository/774-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/robux-com-free_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/http-blackgamesus-coinmasterhack_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/master-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/mcpe-com_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/500-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-kick-off-hacks_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-hacks-mrantifun_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/easy-p-hack-plaza-game-roblox_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/adopt-me-roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-to-get-free-stuff-on-roblox-2021-mobile_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-free-gift-card-org_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/how-to-make-a-free-minecraft-account_GM479516143.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_off00002e98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E98 22132 bytes
SHA-256: c127a5949cb117ab00eaafbaf6eb6c917547beb488553b9cae188394a16ae1cb
font_01_sfnt_off00005f88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F88 19240 bytes
SHA-256: b0a364df4b6b3fd175cbf8c10b987c2b8b84486cbeba555301c872c97c0f7b02

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