Malicious PDF — malware analysis report

Static analysis result for SHA-256 d245eda3560f9266…

MALICIOUS

PDF

36.2 KB Created: 2021-07-01 07:31:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: be8efaa545a71b1306588ce2e7d0dff4 SHA-1: 6da23adbbfd4f536ce1754ecf5d3387d5756f072 SHA-256: d245eda3560f92662490c0776a877c37ebc4689f208aac9eb07f9fb8bf963cde
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/el-mejor-video-de-hack-robux-game-hack PDF link annotation
    • http://digilib.stie-yppi.ac.id/repository/free-robux-2021-december_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-draw-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/freespinandcoin_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-roblox-3d-loading-screen_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-free-items-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-free-gold_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-free-shirts-and-pants-without-builders-club_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/rewardex-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/complete-offers-for-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-gamer_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-admin-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-roblox-gear_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/hack-coin-master-download_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/pokemon-go-free-coins-generator_GM1094591345.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/10-tips-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/comment-hacker-roblox-sans-logiciel_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-user-hacking-toon_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_off00003549.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3549 22148 bytes
SHA-256: 0d844f041f99b5c99ec7e790a34ee3affff6fd61e12b6a1ff1735116deaf2726
font_01_sfnt_off0000664c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x664C 19776 bytes
SHA-256: e369ab4920ae5f8adfea6b782b06c3fb84417ac30f015de67a67be57fc54f0a4

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