Malicious PDF — malware analysis report

Static analysis result for SHA-256 000377ab8a6506d3…

MALICIOUS

PDF

45.2 KB Created: 2021-05-12 23:38:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ee376839daceca087f638b2e34e0ab0e SHA-1: 2458d6f8a2b4d44d5390832bbae8d7c3fd29e984 SHA-256: 000377ab8a6506d3f46c2ed4119a281e0694846122b494b8b7aa2ece7042b5f5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, masquerading as game hacks and generators. These links, such as 'https://netcdn.xyz/app/406889139/hack-coin-master-apk-download-game-hack', are flagged as malicious redirectors. The document body and heuristics suggest a lure for users to download potentially harmful files or visit malicious infrastructure. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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/hack-coin-master-apk-download-game-hack In PDF document text
    • https://privatearrangements.co.nz/public/files/coin-master-35-2-hack_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/free-spin-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/robux-free-c_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/coin-master-hackcom-xyz_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/how-to-get-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/john-doe-roblox-hacker_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/how-do-you-get-roblox-money_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/martian-lettuce-coin-master-free_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/hack-coin-master-game-apk-download_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/regal-world-coin-master_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/haktuts-coin-master_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/cm-daily-spins_GM406889139.pdfIn PDF document text
    • https://privatearrangements.co.nz/public/files/lastrick-com-coin-master-hack_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_off000048b8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48B8 25324 bytes
SHA-256: 9aec1faba8d463d35c0bff733f10a32ae90838a038244bcc433dba8aa4497797
font_01_sfnt_off0000838b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x838B 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008d76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D76 18472 bytes
SHA-256: 510233c67cf4ba9c46367cc2e914fc333a34af58cbf3c60531bd57bb691a7431

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