Malicious PDF — malware analysis report

Static analysis result for SHA-256 c605dac886ed06e7…

MALICIOUS

PDF

33.9 KB Created: 2021-06-26 22:34:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 611188500ae5e66d004ee82ebe301bb1 SHA-1: 69da2d7d541af86e1cadb8b10f2b453581c2c20a SHA-256: c605dac886ed06e722cc65fb28f71d72c75e9a7a0180e992ba9f18f4dbca5416
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that are disguised as game hacks and generators, aiming to lure users into clicking them. The primary URL, http://netcdn.co/app/431946152/roblox-scp-site-61-card-hack-game-hack, is a strong indicator of a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to deliver a second-stage payload or phish for credentials.

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/roblox-scp-site-61-card-hack-game-hack PDF link annotation
    • http://regiefranchet.fr/userfiles/files/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/roblox-free-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/roblox-free-meme-clothes_GM431946152.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/how-to-get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/how-to-get-free-robux-without-downloading-apps-on-ipad_GM431946152.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/roblox-field-of-battle-cheats_GM431946152.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/coin-master-free-spin-best-link_GM406889139.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/toolbox-mod_GM479516143.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/coin-master-hack-online-link_GM406889139.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/uirbxclub-roblox-roblox-hack_GM431946152.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/coin-master-free-gold-cards-link_GM406889139.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/robux-hack-on-aindroid_GM431946152.pdfIn PDF document text
    • http://regiefranchet.fr/userfiles/files/free-robux-roblox-promo-codes_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_off00002e65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E65 21936 bytes
SHA-256: f22bdd39157159b2d947f332cb94579612a8afc1092bada6873766a3c98e56ff
font_01_sfnt_off00005db1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB1 19504 bytes
SHA-256: a347aa9e3c0ce6ba3c4ed3b31b83f0d2ca9286b89ac1b366d40c888793ad42dc

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