Malicious PDF — malware analysis report

Static analysis result for SHA-256 2982dd271489a254…

MALICIOUS

PDF

34.6 KB Created: 2021-06-30 04:29:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: a005b304a8c8a7f0bde3904a0beb1696 SHA-1: 57673bc9e7cedde54e01fefbf3da2f436342da35 SHA-256: 2982dd271489a25432f16a3b22b3b52915f9bfb9f0e1e1ffd0cb6c2b17646b06
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically designed to lure users with promises of free Robux and game hacks. The document body and embedded URLs strongly suggest a phishing or scam attempt, likely leading to further malicious content or malware download. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/guuudd-info-for-free-robux-game-hack In PDF document text
    • http://lib.stimykpn.ac.id/repository/cheat-engin-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-invite-friends-hack_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/robux-code-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-teleport-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-earn-robux-without-cheats_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-pokemon-go-cheats_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-hack-2021-with-no-oprewards_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-arcane-adventures-hack_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-hack-one-app-rewards_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-game-for-pc-free-download_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-make-a-private-server-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-spins-coin-master-links-blogger_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-website-linkmon_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/robux-free-gg_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-tiktok-likes-app_GM835599320.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/hacking-download-for-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-do-you-get-roblox-for-free_GM431946152.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_off000031f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31F4 22048 bytes
SHA-256: a668fe72c7c3415b58c3446c4e6ba4d7cf71b7508de28add28e84ecc86da26b3
font_01_sfnt_off000062d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D0 18888 bytes
SHA-256: a65d542313ed501d01beccb5d28834dbad3234249beac12a00840abb1d9287d2

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