Malicious PDF — malware analysis report

Static analysis result for SHA-256 306ca431f8b6a273…

MALICIOUS

PDF

34.1 KB Created: 2021-07-03 15:06:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 6793d0d4b3b3f3b6deb187b951d6aa35 SHA-1: f49412ac042fd8e6f3288fc0d8033b95b0739701 SHA-256: 306ca431f8b6a27335286db45917afd7ce81d432a908dc820a898989331d5cfa
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/479516143/how-to-get-minecraft-for-free-on-mac-game-hack PDF link annotation
    • http://digilib.unla.ac.id/repository/roblox-com-redeem_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/update-how-to-get-free-stuff-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/pokemon-go-free-account-2021_GM1094591345.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-download-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/rich-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-spin-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/hacking-brotherss-roblox-account_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-coinmaster-spins_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/today-coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/can-i-have-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/code-how-to-get-50-free-crystals-roblox-miners-haven_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_off0000336d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x336D 21672 bytes
SHA-256: 250d01dc53f07f25d588115a87f41da80c249637a78b6d6569b5e9d33e2ed605
font_01_sfnt_off000062cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62CF 18164 bytes
SHA-256: c92c54375cfc09bba30268a56a1496ac876777d0f1d8f409b9898aa174c18f72

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