Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ef7e9a02a0f1d28…

MALICIOUS

PDF

34.5 KB Created: 2021-07-04 19:33:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 37420abc6366f669e00bcc1a92a51f16 SHA-1: 187e7cf7d03aa12538061412f565407d562a0713 SHA-256: 2ef7e9a02a0f1d28e3fb3ac7a6a514421df124fb4f3c89274d0de30b7ecd7528
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a password-protected-archive lure. 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 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/406889139/coin-master-free-spins-and-coins-daily-links-game-hack PDF link annotation
    • http://library.imz.or.id/repository/best-sword-in-fight-the-monster-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/hack-roblox-game-ability_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/minecraft-free-download-2021_GM479516143.pdfIn PDF document text
    • http://library.imz.or.id/repository/hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/the-quarry-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/fly-hack-roblox-no-virus_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/jojos-bizarre-adventure-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-robux-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-robux-game-no-password_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-minecraft-skin-creator_GM479516143.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-jailbreak-speed-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/pokemon-go-free-pokemon_GM1094591345.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-catalog-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • http://library.imz.or.id/repository/how-do-you-get-free-clothes-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/how-to-trade-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002f01.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F01 22680 bytes
SHA-256: 5d922a5f87f27e6df3e84220afc33575ec8a89b47b23f8ea663fc326c475359b
font_01_sfnt_off0000620b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x620B 18940 bytes
SHA-256: c0dcd974f4fe980c6a922a1d67dca4592269afdacb350ab691b189b4ca5ba35f

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