Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdcea4e255640416…

MALICIOUS

PDF

42.3 KB Created: 2021-05-16 12:02:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 52e1b375bb46982f11dab3d88b815848 SHA-1: 40215e4b530e7d5fdfe4dcff57ae054d4e1e6a4f SHA-256: cdcea4e255640416369307263a086800e16720492fdf1ebbe57527ed481c2a14
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 game hack lure. The primary URL, https://netcdn.xyz/app/479516143/minecraft-pe-apk-download-game-hack, is presented as a download link for a game hack. The document body, though heavily obfuscated, contains references to Minecraft and game hacks, reinforcing the lure. No scripts were extracted, but the PDF structure itself facilitates the redirection to the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/479516143/minecraft-pe-apk-download-game-hack PDF link annotation
    • http://www.gravel.ru/images/give-me-robux-now_GM431946152.pdfIn PDF document text
    • http://www.gravel.ru/images/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://www.gravel.ru/images/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://www.gravel.ru/images/roblox-bux-free_GM431946152.pdfIn PDF document text
    • http://www.gravel.ru/images/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://www.gravel.ru/images/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://www.gravel.ru/images/mc-hacks_GM479516143.pdfIn PDF document text
    • http://www.gravel.ru/images/hacked-client-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://www.gravel.ru/images/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.gravel.ru/images/minecraft-pe-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://www.gravel.ru/images/free-roblox-clothes-codes_GM431946152.pdfIn PDF document text
    • http://www.gravel.ru/images/coin-master-fb-free-spins-link_GM406889139.pdfIn PDF document text
    • http://www.gravel.ru/images/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://www.gravel.ru/images/earn-roblox_GM431946152.pdfIn PDF document text
    • http://www.gravel.ru/images/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.gravel.ru/images/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • http://www.gravel.ru/images/coin-master-free-2021-spin-link-today_GM406889139.pdfIn PDF document text
    • http://www.gravel.ru/images/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://www.gravel.ru/images/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.gravel.ru/images/roblox-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004990.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4990 24620 bytes
SHA-256: 445bdb34ff35af2718ce9763c4384429d43bc9f9ba08a9949b1a00898ef14e63
font_01_sfnt_off000081af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81AF 18788 bytes
SHA-256: 8791d3cc95b23c4b4e10828445a3a5a1b9cddfea01917aff66a6701f48000f7b

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