Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9b650b7a32ed0ec…

MALICIOUS

PDF

49.8 KB Created: 2021-06-09 01:18:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 633b232551c892c47f4e5836dc9bfde3 SHA-1: a9aaef93ea39bf80e95640fea517558a2f877705 SHA-256: f9b650b7a32ed0ec05e61e90d3e03a2e6f0049c37ec906ff021462f6e9ae094b
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document employs a lure related to game hacks and cheats, specifically mentioning 'Synapse X' and linking to external sites. The presence of a 'free generator / game hack' redirector and an MFA lure suggests an attempt to trick users into downloading potentially malicious software or harvesting credentials. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a malicious intent to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 5

  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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.tw/app/431946152/synapse-x-download-free-roblox-game-hack PDF link annotation
    • http://educhina.mn/editor/files/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://educhina.mn/editor/files/pokemon-go-free-trade-evolve_GM1094591345.pdfIn PDF document text
    • http://educhina.mn/editor/files/robux-2021-free_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/minecraft-kill-aura_GM479516143.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-minecraft-codes-2021_GM479516143.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-how-to-get-free-pet-food_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-official-fan-page_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-hack-without-root_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/hack-coin-master-spin-android_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/minecraft-112-2-hacked-client_GM479516143.pdfIn PDF document text
    • http://educhina.mn/editor/files/unlimited-robux-2021_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/alone-roblox-free_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-hack-xyz-apk-download_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-apk-hack-358_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://wolfzscriptsIn 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
font_00_sfnt_off00005252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5252 27152 bytes
SHA-256: 37d1fe0196b1eb39225566bb6fd4052eb3686375a8f28819e0caae0f44ada644
font_01_sfnt_off000090b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90B1 3936 bytes
SHA-256: 56f91d12f1fd26ee93de517f09e63ae86dd2fe155f74f5627c9f6637d22945ea
font_02_sfnt_off00009d9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D9D 19036 bytes
SHA-256: cf3e2afdd28eb721aff122f3a910db5a60e34f5fc43ba0e26bd81f0c690b41e4

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