Malicious PDF — malware analysis report

Static analysis result for SHA-256 797e62a755998848…

MALICIOUS

PDF

33.8 KB Created: 2021-07-06 19:37:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 0ce9887f85aed7762383c4669772b8d7 SHA-1: a6f976acc28627e0e2b04c334fd27e4727694611 SHA-256: 797e62a755998848994ff10916864d03bc6bbca115c77c273b866e464494debd
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/835599320/tiktok-free-nose-job-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id//repository/free-minecraft-education-edition_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/hacks-impulse-testing-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/baixar-hack-roblox-winrrar_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-roblox-codes-2021-march_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/was-roblox-hacked-once_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/minecraft-116-free-download_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-athoi-admin-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-and-spin_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-hack-2021-android_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/neptunian-v-hacking-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-royal-high-cheates_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/astuce-hack-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-minecraft-realm-codes_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-roblox-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-coin-master-hacks_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_off000030bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30BD 21832 bytes
SHA-256: 1e91c5d027b00b0bc306b77fea99310ac909a6b1d6fcc9a9fdd4ba00cc74525b
font_01_sfnt_off00006114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6114 18296 bytes
SHA-256: 3f2241fb74df964a4b8cc3895183bfb5fe5e210b439480ad98e91c189d208e92