Malicious PDF — malware analysis report

Static analysis result for SHA-256 1780fcf0f93d64b6…

MALICIOUS

PDF

34.1 KB Created: 2021-07-04 10:41:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: bac573b5b19a2c6146d3581c594345e0 SHA-1: 72fb320ef4f6629978025b80837ccf1390c1fd81 SHA-256: 1780fcf0f93d64b6345cc66cd833f70387796da7fc4e7bd2d123895c457b2216
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-risk heuristic indicating it links to a 'free generator / game hack' redirector. The embedded URL and document body text reinforce this lure, aiming to trick users into visiting a malicious site. No scripts were extracted, but the primary function appears to be directing users to a potentially harmful external resource.

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/406889139/claim-coin-master-free-spins-game-hack PDF link annotation
    • https://www.ferraroni.net/public/risorse/ck/files/how-to-get-free-skins-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/coin-master-download-hack_GM406889139.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/roblox-counter-strike-hacks_GM431946152.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/how-do-you-get-roebucks_GM431946152.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/rbuxcheats-club-roblox-hack-gold-generator_GM431946152.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/easy-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/how-do-you-grt-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/how-to-get-free-packages-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/is-tiktok-free_GM835599320.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/get-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/coin-master-cheat-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/coin-master-daily-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/instalar-hack-btools-roblox_GM431946152.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/roblox-im-freaking-out-hack_GM431946152.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/how-to-get-free-robux-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.ferraroni.net/public/risorse/ck/files/minecraft-windows-10-edition-hacks_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
stream_002_off00002f98.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F98 22560 bytes
SHA-256: ead3a136f8984cc4af2a4d0bd91943d16c5eba2c7af5cab1a41e8296f7b2f731
font_01_sfnt_off00006205.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6205 18508 bytes
SHA-256: 987175f1bef36cd1a6ae0c6c9abaf20945c3bf3d09c946a67552c00f8a973d90

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