Malicious PDF — malware analysis report

Static analysis result for SHA-256 03e75089787e7fef…

MALICIOUS

PDF

33.9 KB Created: 2021-07-05 05:01:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 67d31a5f06a3c8b44622e7c818cfbd66 SHA-1: 53805dbf6fb857bc6e19e0b619e4a2771576e8e2 SHA-256: 03e75089787e7feff91ad28f73b8f2a4e45cef8f4a64c29ad33a674b52396def
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/freerubux-game-hack PDF link annotation
    • http://perpus.masda.ac.id/repository/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-pets-in-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-free-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-free-robux-no-phone-number_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-doom-cheat-codes_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/daily-free-spins-coin-master-heaven_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/cheapest-pubg-uc_GM1330123889.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/games-like-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/gravity-coil-roblox-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-e-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/village-coin_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/hack-coin-master-apk-358_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-free-download-android-apk-014-0_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/mcpe-free-download_GM479516143.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_off00002ee5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EE5 22400 bytes
SHA-256: 64aacb99ee1dc248fa6da210a0a96df9b5a0a00ff607b552be283eb24c660396
font_01_sfnt_off000060e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E5 18572 bytes
SHA-256: a4910544a3301e21d5425f47d387c0dcd2b1454e32e0c532c02705c370365377

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