Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1efbcdfb328a88e…

MALICIOUS

PDF

41.8 KB Created: 2021-05-30 14:19:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 04ae8d39c5865bccdabad19a8a9894ca SHA-1: 49c34d6f46aa9bc9de68fce72c6eea017eb4c493 SHA-256: c1efbcdfb328a88eab54392e4bca057cfe7ee50716f5b1e7ff93a99b673757ca
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 0.9705

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/479516143/how-to-setup-a-minecraft-server-for-free-game-hack PDF link annotation
    • http://apcpk.com/wp-content/uploads/fsqm-files/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/free-followers-for-tiktok_GM835599320.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/free-robux_GM431946152.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/how-to-get-followers-on-tiktok-for-free_GM835599320.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/free-robux-app_GM431946152.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/free-online-minecraft-server_GM479516143.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/try-minecraft-free_GM479516143.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/100-free-spins-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_off00004aff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AFF 23696 bytes
SHA-256: 1aa63231b535ea1c4ea4b6e10bcc0f5ba4a5582d2e42d46850bae7fcea4e4bfe
font_01_sfnt_off000080d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80D1 18304 bytes
SHA-256: b0360e651ad81bf5acbb1fd73200378f36351cb2aebcef0077014d987ef32c64

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