Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cb95707dba7e7ee…

MALICIOUS

PDF

34.0 KB Created: 2021-07-06 10:23:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: dc276a469bdfc3bc0cf78ba8f21b3df5 SHA-1: 0f3f91242748e32d0ba22421a8b90dde283605cb SHA-256: 8cb95707dba7e7ee8db4fb6d75ca3d134d6bc4423e2d2ace8103c0a0ed5a275d
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 0.9980

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 http://netcdn.tw/app/406889139/free-coins-on-coin-master-2021-game-hack PDF link annotation
    • https://elearning.mansidoarjo.sch.id/__statics/gudangsoal/files/how-to-hack-any-game-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mansidoarjo.sch.id/__statics/gudangsoal/files/synapse-hack-for-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mansidoarjo.sch.id/__statics/gudangsoal/files/minecraft-hack-ios_GM479516143.pdfIn PDF document text
    • https://elearning.mansidoarjo.sch.id/__statics/gudangsoal/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mansidoarjo.sch.id/__statics/gudangsoal/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • https://elearning.mansidoarjo.sch.id/__statics/gudangsoal/files/roblox-noclip-hack-2021-cheat-engiene_GM431946152.pdfIn PDF document text
    • https://elearning.mansidoarjo.sch.id/__statics/gudangsoal/files/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • https://elearning.mansidoarjo.sch.id/__statics/gudangsoal/files/robux-pin-free-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mansidoarjo.sch.id/__statics/gudangsoal/files/jump-hack-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mansidoarjo.sch.id/__statics/gudangsoal/files/roblox-apocalypse-rising-cheat-engine-codes_GM431946152.pdfIn PDF document text
    • https://elearning.mansidoarjo.sch.id/__statics/gudangsoal/files/double-jump-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mansidoarjo.sch.id/__statics/gudangsoal/files/where-to-get-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mansidoarjo.sch.id/__statics/gudangsoal/files/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mansidoarjo.sch.id/__statics/gudangsoal/files/roblox-red-shirt-free_GM431946152.pdfIn PDF document text
    • https://elearning.mansidoarjo.sch.id/__statics/gudangsoal/files/robuxreward-net-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mansidoarjo.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • https://elearning.mansidoarjo.sch.id/__statics/gudangsoal/files/how-2-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://elearning.mansidoarjo.sch.id/__statics/gudangsoal/files/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • https://elearning.mansidoarjo.sch.id/__statics/gudangsoal/files/roblox-hacks-discusion_GM431946152.pdfIn PDF document text
    • https://elearning.mansidoarjo.sch.id/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003106.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3106 22064 bytes
SHA-256: 9864041da178804dfa0184ce1e62fc17a7a059c70e75c293eddeb9c2c1b9919c
font_01_sfnt_off000061e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61E2 18400 bytes
SHA-256: bed343b2bd1f226d572eb4efd0842b7506c1f222f82179a57ffd65f3da1cc054

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