Malicious PDF — malware analysis report

Static analysis result for SHA-256 83384354a65ccecd…

MALICIOUS

PDF

35.2 KB Created: 2021-06-18 00:57:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e3129131b0035286233a571998e47632 SHA-1: d187c61565556a8a92f98e54dc382e179bea8b10 SHA-256: 83384354a65ccecd0dd6afaf2e435aeed9314ff3ee56a1f6403e4069d102602e
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.co/app/431946152/roblox-what-do-do-when-account-hacked-and-then-terminated-game-hack PDF link annotation
    • http://katalog.ireyogya.org/repository/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-admin-hack-script-2021_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-gg-redeem-codes_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-avatar-girl_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/tiktok-fans-free_GM835599320.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-today_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-34-5-hack_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-hack-version-download-2021-ios_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/make-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/easiest-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/alpha-hack-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-no-human-verification-or-survey_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_off0000303b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x303B 22552 bytes
SHA-256: 1bb75daecc2c4841d68dffb5129d7a63df552358030e94316fea4d4760765548
font_01_sfnt_off0000626a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x626A 19800 bytes
SHA-256: f7e11b763ba52495d2e118d6dfce58405fe8a0f441f63a0f66c976c91a7f4b0d

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