Malicious PDF — malware analysis report

Static analysis result for SHA-256 56d6782332001865…

MALICIOUS

PDF

47.1 KB Created: 2021-05-14 23:04:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: f63db6c13c3d3ff151214dafd685444f SHA-1: 879659c5648401f7c5f19c285a0566b443babe37 SHA-256: 56d6782332001865d7ad6b19f10df3eb7c2fe23860425783b40d53e431535944
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirector infrastructure, specifically advertising 'free generators' and 'game hacks'. The primary link, https://netcdn.xyz/app/406889139/free-coin-and-spin-in-coin-master-game-hack, is associated with a lure for game cheats. The document body, though partially corrupted, contains similar URLs and text, reinforcing the social engineering aspect. No scripts were extracted, but the presence of embedded URLs and the ML classifier's high confidence suggest a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/free-coin-and-spin-in-coin-master-game-hack In PDF document text
    • http://ilccanada.org/images/cmaster-club-coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • http://ilccanada.org/images/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://ilccanada.org/images/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://ilccanada.org/images/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://ilccanada.org/images/roblox-images_GM431946152.pdfIn PDF document text
    • http://ilccanada.org/images/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://ilccanada.org/images/how-can-you-get-robux_GM431946152.pdfIn PDF document text
    • http://ilccanada.org/images/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://ilccanada.org/images/minecraft-hacks-xbox-one_GM479516143.pdfIn PDF document text
    • http://ilccanada.org/images/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://ilccanada.org/images/free-robux-please_GM431946152.pdfIn PDF document text
    • http://ilccanada.org/images/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://ilccanada.org/images/coin-master-free-spin-link-today-download_GM406889139.pdfIn PDF document text
    • http://ilccanada.org/images/app-store-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://ilccanada.org/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://ilccanada.org/images/coin-master-online-hack_GM406889139.pdfIn PDF document text
    • http://ilccanada.org/images/coin-master-free-spins-cheats_GM406889139.pdfIn PDF document text
    • http://ilccanada.org/images/how-to-get-stuff-that-cost-coins-free-mpe-master_GM406889139.pdfIn PDF document text
    • http://ilccanada.org/images/free-roblox-script-executor_GM431946152.pdfIn PDF document text
    • http://ilccanada.org/images/hey-google-how-do-you-get-free-robux_GM431946152.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_off00004c39.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C39 26896 bytes
SHA-256: ae73879091e1494113972cc6d3f183c28a45f7bb5cbeb348856ecc556ae5a9b9
font_01_sfnt_off000089bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89BC 3592 bytes
SHA-256: 8205e3b29cb44f91c42e08b5d0bed81c74c8dcd273656a00c726b07d80f6778d
font_02_sfnt_off00009669.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9669 18060 bytes
SHA-256: e7e0a884e59d6d4457fb90cba238d6b772cb21bcfadc79e96e95c97f919ce424

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