Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbe4b2cbd47aa24c…

MALICIOUS

PDF

43.1 KB Created: 2021-05-12 16:03:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 57bdb174d6b944090de5228e2205f100 SHA-1: 4c13e9319d9c186d1e0940b57b44b17a7426cf7a SHA-256: fbe4b2cbd47aa24c017f2f16458a4ec99f9a78a588b6e67cd960a038f94a9940
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links that lure users with promises of game hacks and generators, such as for Roblox and Coin Master. These links lead to external websites that are likely to host malware or phishing content. The presence of a download button lure and callback phishing indicators further supports a malicious intent to deceive the user into downloading a payload or engaging with a scam.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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.xyz/app/431946152/roblox-hack-site-game-hack PDF link annotation
    • http://librarystkippgribl.com//repository/how-to-hack-in-arsenal_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/free-spins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/roblox-account-hacker-tool_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-shields-coin-master_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-free-rare-cards_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/free-roblox-intros_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-link-app_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/how-to-hack-coin-master-game-without-root_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-viking-quest-hack_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/minecraft-bedrock-edition-pc-free_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-spins-and-coins-for-coin-master-game_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
stream_003_off000049ac.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49AC 26672 bytes
SHA-256: a4173c7ec570e866a383ddccaa459a4a4e8bcc2d75726153ec5df3e53cae2526
font_01_sfnt_off0000858c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x858C 18408 bytes
SHA-256: baa68e8b80fe17984eb0f5893287011db8c451c65a8bba41303beeb2aadfa952

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