Malicious PDF — malware analysis report

Static analysis result for SHA-256 740f28cfb8e4ce05…

MALICIOUS

PDF

46.0 KB Created: 2021-05-11 20:32:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 517889a5817d8be538f75b0e58ac38b8 SHA-1: 64f512f7a01bfe3aa7b1e293a79a692f48982de7 SHA-256: 740f28cfb8e4ce052f6017996f65fda167b060fb2bfd825068943a5f8eb75537
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a game hack lure. The document body, though heavily obfuscated, contains references to 'Coin Master Hack Club' and a URL that reinforces this theme. The embedded link likely directs users to a malicious site designed to exploit their interest in game cheats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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 https://netcdn.xyz/app/406889139/coin-master-hack-club-game-hack PDF link annotation
    • http://alexandergroep.nl/images/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://alexandergroep.nl/images/coinmaster-free-cards_GM406889139.pdfIn PDF document text
    • http://alexandergroep.nl/images/free-minecraft-account-and-password-generator_GM479516143.pdfIn PDF document text
    • http://alexandergroep.nl/images/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://alexandergroep.nl/images/coin-master-apk_GM406889139.pdfIn PDF document text
    • http://alexandergroep.nl/images/roblox-robux_GM431946152.pdfIn PDF document text
    • http://alexandergroep.nl/images/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://alexandergroep.nl/images/free-roblox-pin-codes_GM431946152.pdfIn PDF document text
    • http://alexandergroep.nl/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://alexandergroep.nl/images/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://alexandergroep.nl/images/coin-master-card-collection-hack-2021_GM406889139.pdfIn PDF document text
    • http://alexandergroep.nl/images/free-robux-mod_GM431946152.pdfIn PDF document text
    • http://alexandergroep.nl/images/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://alexandergroep.nl/images/coin-master-apk-free-download_GM406889139.pdfIn PDF document text
    • http://alexandergroep.nl/images/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://alexandergroep.nl/images/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • http://alexandergroep.nl/images/how-to-get-free-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • http://alexandergroep.nl/images/how-to-hack-coins-in-archery-master-3d_GM406889139.pdfIn PDF document text
    • http://alexandergroep.nl/images/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://alexandergroep.nl/images/minecraft-items_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000046f6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46F6 30392 bytes
SHA-256: 90fec715eb14046fa04b65c72c04cb71ea23fd8f03291433b009f59f9e8e2602
font_01_sfnt_off00008805.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8805 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off000091ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91EF 18088 bytes
SHA-256: 489fcd50e077ea385706302a414b20846aa2690c2d534c5e871bb508b565cca7

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