Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc3ae654984c5205…

MALICIOUS

PDF

56.1 KB Created: 2021-05-12 21:13:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 89bf9f966ac82ecff9f9b4d908cd97ef SHA-1: 51826efae5dcab34e7d31581f06158a94063b588 SHA-256: cc3ae654984c520561a00d8863c772a300bd87c3b613c5e99358852b7c876100
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector domains and sites offering game hacks and free currency, such as 'coin-master-admin-free-spins-game-hack'. These links are indicative of a phishing or scam attempt, likely designed to lead users to malicious websites. The presence of embedded URLs and the ML classifier's flagging further support the malicious nature of this document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8193

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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-admin-free-spins-game-hack In PDF document text
    • https://www.metal.hr/files/free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/minecraft-pocket-edition-hack_GM479516143.pdfIn PDF document text
    • https://www.metal.hr/files/minecraft-images-free_GM479516143.pdfIn PDF document text
    • https://www.metal.hr/files/free-minecraft-account-and-password-generator_GM479516143.pdfIn PDF document text
    • https://www.metal.hr/files/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • https://www.metal.hr/files/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/free-robux-app-real_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/roblox-robux_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/free-attacks-coin-master_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • https://www.metal.hr/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://www.metal.hr/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e9e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E9E 26588 bytes
SHA-256: 151971e8113c6e1151cb766fd33fc70d179f6ffdab372dfb6e065d58e921461f
font_01_sfnt_off00008c9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C9B 3088 bytes
SHA-256: e7854aff7cbc8fbdeb85d2b3d6248d12dc820ede8a581f4eac107fa6446c2222
font_02_sfnt_off00009766.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9766 7960 bytes
SHA-256: cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2
font_03_sfnt_off0000aa8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA8C 18320 bytes
SHA-256: 356ab8ba446e161f2af7577b22894ec36e2736224799e1ddbdd808f48a6a9d7e
font_04_sfnt_off0000cc92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC92 4272 bytes
SHA-256: fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0

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