Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7b370b7a9f11df2…

MALICIOUS

PDF

47.2 KB Created: 2021-06-04 04:48:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8813b25c895ef0b8e6562b5eb512d182 SHA-1: 9947d57c46933cd647a8e3b7a71c30a199143c76 SHA-256: c7b370b7a9f11df2b9c5369046af630f3589fa2084553193307808e9a56dc4ff
82 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs that redirect to sites offering game hacks and generators, a common lure for distributing malware. The heuristic firings confirm the presence of external URIs and a specific lure related to game hacks. The document body, though partially corrupted, also contains a URL pointing to a 'how-to-download-minecraft-hacks' page, reinforcing the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.online/app/479516143/how-to-download-minecraft-hacks-game-hack PDF link annotation
    • http://lib.vipklh.ru/repository/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-hack-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/robux-free-co_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-hack-programers_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-free-spain_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-unlimited-spins-apk-free-download_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/make-robux_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-hackers-list_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-obby_GM431946152.pdfIn PDF document text
    • https://playhack.in/minecraftIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005156.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5156 25404 bytes
SHA-256: c99c0cab5bc3331a4b5b870762ff03e03d785bf294fa0409d79afb45eec194c1
font_01_sfnt_off00008bbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BBF 2820 bytes
SHA-256: 34dd21cbcbbf8680f9624d5ddfa25e49232e6768200f74ddacb5347fd7a5f6dc
font_02_sfnt_off00009560.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9560 18460 bytes
SHA-256: 201e47ea1bc759f6ab60629fe707baeeae03fa46224cbd2752ecc215bd4960d2

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