Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1fd00066d3d4779…

MALICIOUS

PDF

28.4 KB Created: 2021-05-10 19:42:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: f46c0a27287a720caabf38351b432184 SHA-1: f029f976674aa753ea2598efebb2198bb725471b SHA-256: a1fd00066d3d47799d791bc927c15e58589011c66efda50816f33c85cff0108d
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 0.9747

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/431946152/roblox-free-clothes-girl-game-hack PDF link annotation
    • http://www.pspmrsmkber.com/opac/repository/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/minecraft-java-account-free_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/coin-master-tricks_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/how-to-make-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/coin-master-free-spins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/roblox-demon_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/script-executor-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/free-roblox-usernames-and-passwords_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/free-robux-app_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/hacks-minecraft_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/minecraft-18-9-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/coin-mast-hacks_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkber.com/opac/repository/free-redeem-code-for-coin-master_GM406889139.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_off000021a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21A7 20048 bytes
SHA-256: c69eedc25e846113845b44b1e2e4358aec3d185a0a65186b047f4146a3b92e78
font_01_sfnt_off00004c4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C4E 18340 bytes
SHA-256: 43b97e088e2ffab0722e8ce3b94223e5cd299235dccb62a3edb2f682d17634b7

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