Malicious PDF — malware analysis report

Static analysis result for SHA-256 aed7555b6c8fc1fa…

MALICIOUS

PDF

42.4 KB Created: 2021-05-11 22:11:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a5879824a82dede75cb3ca894a50f7f1 SHA-1: ce3f82b98465ad62557532d29991522bf95a5ff9 SHA-256: aed7555b6c8fc1fac11cfbe46ba9d4edb58a35a13897f975492320d1841c4263
82 Risk Score

Malware Insights

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

This PDF document employs a common lure of offering a "Coin Master Hack Tool" to trick users into clicking malicious links. The document contains multiple embedded URLs pointing to external sites that likely host further malicious content or facilitate downloads. The ML classifier strongly indicated maliciousness, supporting the observed social engineering tactics.

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/406889139/coin-master-hack-tool-pc-download-game-hack PDF link annotation
    • http://gops.pruszczgdanski.pl/images/coin-master-hack-apk-35-33_GM406889139.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/coin-master-hack-apk-with-fb-login-2021_GM406889139.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/how-long-is-the-minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/coin-master-games-hack_GM406889139.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/microsoft-robux_GM431946152.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/coin-master-free-spins-without-verification_GM406889139.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/free-robux-scams_GM431946152.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/coin-master-facebook-hack_GM406889139.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/minecraft-free-download-apk-softonic_GM479516143.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/how-to-get-daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/coin-master-hack-ios-no-human-verification_GM406889139.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://gops.pruszczgdanski.pl/images/minecraft-win-10-free_GM479516143.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
stream_003_off00004907.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4907 25032 bytes
SHA-256: 328be81c294f5e6c5699e9a4d6509dd1febae343bed7c18cbd7da7002e5cb44c
font_01_sfnt_off000082cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82CD 18448 bytes
SHA-256: f69ccf4ac9a4c7b2b45b9f8ac93aa461b645c03c3d93edb8b39843cc7a5e0583

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