Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a9ce716ade8e482…

MALICIOUS

PDF

45.6 KB Created: 2021-05-16 11:36:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 46d48f4115156444e7f58fd8eb01799c SHA-1: 20f9b1707f8a6c6db4d8bf0621c8a7412d8a385d SHA-256: 5a9ce716ade8e4822a68398041804c442daf64a2b80e6b30a311ea2dd33fe516
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/mcpe-master-coin-hack-apk-game-hack PDF link annotation
    • http://www.ma-plast.hr/files/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-free-daily-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coin-master-link-daily-get-free-spins-amp_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/300-daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/moonactive-coin-master_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/get-free-lives-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-facebook-page_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-draw-roblox_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/blox-rewards_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-free-online_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • https://www.ma-plast.hr/files/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/gameoffice-net-hack-coin-master_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_off000048a0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48A0 27444 bytes
SHA-256: 85967538e8d19f389669865d4e2cc19a976f603d952551685e0bd46ce6ea2681
font_01_sfnt_off00008707.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8707 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off000090b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90B9 17892 bytes
SHA-256: df4699ad1f6ddac4a242edb3e57737628ee6aca47845cdea5c03b85425c35389

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