Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a5f18ef6949bea2…

MALICIOUS

PDF

34.9 KB Created: 2021-07-04 23:59:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d07565a0e279b62a60c9266c4c2e05e1 SHA-1: 5f52b9e66bf88b28dc32aaace0dc4b2d76e8c9aa SHA-256: 9a5f18ef6949bea271322a957d9a0808078e6a4832def3f7240710e6147a2b8b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure related to 'free Robux' and 'game hacks', directing users to a suspicious URL. This indicates a phishing or scam attempt designed to entice users to visit a potentially malicious site. The ML classifier also flagged this PDF as malicious with high confidence.

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/free-robux-redeem-codes-game-hack PDF link annotation
    • http://library.forda-mof.org/katalog/repository/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/cm-spin-link_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-mod-version-free-download-ios_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-minecraft-mods-for-xbox-one_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-game-free_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-pe-hacks-ios_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/real-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/como-hackear-counter-blox-roblox-offensive-en-espaol_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-hack-tool-without-verification_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-create-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-images-free_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spin-coin-master-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_off0000308f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x308F 22544 bytes
SHA-256: 124cf3fe043e9c8e020a33a9507f0b91657a944720922f30c7d73445832b3373
font_01_sfnt_off0000630b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x630B 19152 bytes
SHA-256: 2beb9c583ef49ea143b974913017cf2f00d835df8237c6c52447211218059ebd

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