Malicious PDF — malware analysis report

Static analysis result for SHA-256 c06d5e5a4c04f534…

MALICIOUS

PDF

45.8 KB Created: 2021-05-10 22:32:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 6314a75ee44107bfb00fc292b84c66b8 SHA-1: b300b3e921ee074618a5c27911394b1849e10420 SHA-256: c06d5e5a4c04f5349e0c12af0d5f9dad697ebbc9b29188f6fa61a399d1c46c6d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure related to 'free spins' and 'game hacks', directing users to a suspicious URL. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' confirms this intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/free-spins-coin-master-october-17-2021-game-hack PDF link annotation
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/coin-master-daily-rewards-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/roblox-lovenet_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/earn-points-for-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/robux-cheat_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/roblox-games-com-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-2021_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/coin-master-apk_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/coin-master-invite-friends-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/coin-master-hack-unlimited-spins-game-download_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/how-to-download-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/claim-coin-master-free-spins_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_off00004ad3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AD3 24776 bytes
SHA-256: 3021b6a813f325ef939f102f3b011b1b269f575584f3197ba96044109f976f18
font_01_sfnt_off000083a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83A4 3380 bytes
SHA-256: 1dd933c112880b232546f3aab6a17784a8f412d39fd551cc6eb31c5a04c3ce57
font_02_sfnt_off00008f8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F8D 18504 bytes
SHA-256: aa7bff32dbd331c78ef5965829602ae5e6111fcf7e9748869226dce5f8ff9ec9

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