Malicious PDF — malware analysis report

Static analysis result for SHA-256 3acf3410240fd8a3…

MALICIOUS

PDF

32.7 KB Created: 2021-07-04 09:11:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8e84b8aa4f807cca7356584cf97269c7 SHA-1: bcdf4703692925a52393a76c8553f07e925a28ac SHA-256: 3acf3410240fd8a3ef231227158a238bc91cda82534972fc72f9aba13f10cf7d
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/479516143/wurst-115-game-hack PDF link annotation
    • http://perpus.masda.ac.id//repository/how-to-hack-coin-master-game-without-root_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/wurst-mc_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-robux-on-ipad-real_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/ben-10-cheat-codes-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/get-free-robux-from-watching-ads_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-coin-master-credit_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/comment-hacker-un-jeu-de-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-do-you-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-legit_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-permanently-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-change-your-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/robux-case-for-free-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/easy-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-daily-bonus_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/como-hackear-la-ropa-de-personas-en-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/minecraft-pe_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/best-minecraft-hacks_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_off00002c86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C86 21960 bytes
SHA-256: f6a75b69ffa7b4eeee6365bcbca8c4b02249de08c39e075d66c9b9db45d15704
font_01_sfnt_off00005cdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CDB 18312 bytes
SHA-256: aae8f554f9dbfa6de7f67aea7508dd29eac015a7595ddec0685b2a6423b5fdb1

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