Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ff588fba40dbe3d…

MALICIOUS

PDF

44.9 KB Created: 2021-06-11 00:21:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 64ef902d4888822900dd0fc463c894a3 SHA-1: e5acffd6876b2c3e79d3d33643da6bb64b366c78 SHA-256: 8ff588fba40dbe3d6565cab97c54c9678f7c381e6c6d9362e12074ce1abe838e
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 0.9865

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.tw/app/431946152/roblox-parkour-hack-game-hack PDF link annotation
    • http://digilib-ppsunisma.ac.id/repository/como-hackear-robux-en-roblox-2021-facil-y-rapido_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/give-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-high-jump-hack_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/create-a-free-roblox-thumbnail_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/groups-that-give-free-robux-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-hack-software_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-change-your-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-free-items-2021_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-hack-a-minecraft-account_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-hair-catalog-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/cerberus-roblox-free_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-cheat-apk-free-download_GM406889139.pdfIn PDF document text
    • https://www.semrush.com/prices/In 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_off00005349.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5349 24952 bytes
SHA-256: 968eb45a19251f4696701a0bc9e6c84db0782b3349de58e5b3f39a8aee152f06
font_01_sfnt_off00008c8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C8A 18476 bytes
SHA-256: d22bbf5f16e9e21ced5b48df7b20adffe7cbca4331639b90290719a8cfa4e632

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