Malicious PDF — malware analysis report

Static analysis result for SHA-256 852ea2c2751914ae…

MALICIOUS

PDF

44.7 KB Created: 2021-05-19 22:25:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 1092806a7e2ddf4a98edf29a3ef42f68 SHA-1: 9528693158caa8f49afb6eae4b47829ced53c284 SHA-256: 852ea2c2751914aec2364a92f4f312fbfc521791986626669f50a7e5e83769e3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appears to be a game hack or generator. The primary link, https://netcdn.xyz/app/406889139/60-free-spins-on-coin-master-game-hack, is identified as a malicious redirector. The document body and embedded links suggest a social engineering tactic to drive traffic to potentially malicious sites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/406889139/60-free-spins-on-coin-master-game-hack In PDF document text
    • http://roxe2banh.com/public/upload/files/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/e-free-roblox_GM431946152.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/free-coin-spin-daily-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/free-robux-legit_GM431946152.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/how-to-play-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/is-windows-10-minecraft-free_GM479516143.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/more-robux_GM431946152.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/coin-master-hack-version-download-ios_GM406889139.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/coin-master-hack-spin-generator-tool_GM406889139.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://roxe2banh.com/public/upload/files/coin-master-hack-extension_GM406889139.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_off0000497e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x497E 24816 bytes
SHA-256: e662e8c3291283c5d0235c5c1fbf46ffcf0394b54e29734eebc59d96ef0414f8
font_01_sfnt_off00008267.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8267 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008c51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C51 18224 bytes
SHA-256: fb8ca16964c1cfb5d3ac46424d3104c0504772e256342925334c3af996e4fdd1

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