Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0bf36a65c1aab05…

MALICIOUS

PDF

33.7 KB Created: 2021-07-09 05:35:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 9ba3c4ccd760cf8d3d417085bd9b2cad SHA-1: 361ac70aac57fc1a43c6456bbddd83ab92aa6cf5 SHA-256: d0bf36a65c1aab0563ff53d56f32bd457ee605c5a5e41d9fa8659af6959cf5df
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/431946152/free-robux-generator-codes-game-hack PDF link annotation
    • http://digilib.unbari.ac.id/repository/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/cheat-roblox-mad-paintball-2_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/download-fly-hack-on-roblox-vampire-hunters_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/my-roblox-account-was-hacked_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/free-robux-codes-real_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/how-to-hack-a-roblox-account-to-show-people_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/coin-master-daily-free-spin-and-coin-link-haktuts_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/how-to-upload-your-own-shirt-roblox-free_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/cheat-roblox-superpower-training-simulator-2021_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/coin-master-freebies-2021_GM406889139.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://digilib.unbari.ac.id/repository/coin-master-hack-no-survey-or-verification_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_off00002e15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E15 21956 bytes
SHA-256: 9d82a7e52c238f9295174bc2f4531eaf6a2365eaf248c0aadca8355bd46aed11
font_01_sfnt_off00005e9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E9F 18996 bytes
SHA-256: 91c816d1018d58562acf1f6be5737a46a508402ca9fb9bb64fdd640b276a109f

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