Malicious PDF — malware analysis report

Static analysis result for SHA-256 9780d22f281dd3b0…

MALICIOUS

PDF

47.6 KB Created: 2021-05-14 11:31:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b173d319612a34ad973d0a430e5f4f11 SHA-1: 99626b8a68731d691bcfb8a98d7d16848bfaca25 SHA-256: 9780d22f281dd3b0aeab36fc9433ba4fc4d43cf8a5b22390152d7028bbff654b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links and a heuristic firing for a 'game hack' lure, directing users to suspicious URLs. The document body, though partially corrupted, contains references to game hacks and a URL that aligns with the heuristic findings. The presence of these links suggests an attempt to redirect users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8715

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/hack-game-plus-com-coin-master-game-hack PDF link annotation
    • http://julo-it.net/images/coin-master-hack-reddit_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/flip-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://julo-it.net/images/coin-master-free-spins-cheat-codes_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://julo-it.net/images/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • http://julo-it.net/images/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/coin-master-rewards-app_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/coin-master-free-chip_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000477a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x477A 24740 bytes
SHA-256: ae2673539ca97f99037157d64e0944c32d0fc0ee7f2339e326e909b95e0f3723
font_01_sfnt_off00007faf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FAF 4028 bytes
SHA-256: a17c2a746d49ac23b23e38a371e32fddecfcd91b10cf42ff6155bff6b8a07e91
font_02_sfnt_off00008d4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D4F 2788 bytes
SHA-256: 6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530
font_03_sfnt_off0000973e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x973E 18344 bytes
SHA-256: 67e0faa45ea1c1ed6f200b64ded63a8801cb37d584db731deacfac1a4f2a4512

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