Malicious PDF — malware analysis report

Static analysis result for SHA-256 c43d29011b65d291…

MALICIOUS

PDF

34.2 KB Created: 2021-07-03 13:33:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: eeb4cc8d20a0b3899ad1a9a2edc22747 SHA-1: 6c2d2b11ed5061cc4a94824b1a2daaa7f5ba2c1b SHA-256: c43d29011b65d2917b8cdd14fc48aae060e75ca258fd26aaceb19c5dcd205b09
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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/406889139/coin-master-hack-without-verification-game-hack PDF link annotation
    • http://perpustakaan.ftk.uinib.ac.id/repository/new-hacker-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id//repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/play-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id//repository/roblox-free-pets_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/coin-master-hack-tips_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id//repository/how-to-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/free-coins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/free-robux-hacks-may-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id//repository/como-hackear-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/how-too-hack-in-superhero-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/roblox-doomspire-brickbattle-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id//repository/2021-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/how-to-cheat-money-in-roblox-lumber-tycoon_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id//repository/coin-master-free-spins-android_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/hack-774-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/vehicle-simulator-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/coin-master-70-spin-link-today_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id//repository/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.htmlIn 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_off000030c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30C7 22152 bytes
SHA-256: 3a24086c6e6e6aec5ff9cc184c941adc2cce51b8a0b5dbca930542fb95343411
font_01_sfnt_off000061d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D0 18640 bytes
SHA-256: e70c731676407bb7de6fff885d091169cd44aed03cdfcdb15904209bbd23907c

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