Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce85c7adff159f01…

MALICIOUS

PDF

43.4 KB Created: 2021-06-03 21:12:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 1bf5c54638edb7ef572449f3a17424ef SHA-1: 7c463af53834ebc12188090b2da4d537e1ae420f SHA-256: ce85c7adff159f01c3df0476317fc7896347a3fc99582988af684c4714ded54b
74 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 3

  • 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.
  • 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 https://netcdn.online/app/431946152/free-roblox-gear-game-hack PDF link annotation
    • http://perpus.fisip.unnur.ac.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/coin-master-gold-cards-free-2021_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/coin-master-hack-2021-app_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/free-robux-legit_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/coin-master-free-spins-link-deutsch-ios_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/minecraft-pe-apk-download-free-015-0_GM479516143.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/roblox-play-as-guest-free_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/pokemon-go-hack-free-coins-no-human-verification_GM1094591345.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/mcpe-master-hack-unlimited-coins_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/roblox-studio-free_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/how-do-you-hack-roblox_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
stream_004_off000053b0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53B0 28828 bytes
SHA-256: 1c0ae3cef79036d98af5701dc872502d2bdb837a58629c2c5496bdd2b80417c4
font_01_sfnt_off00009845.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9845 7476 bytes
SHA-256: e7752f0650bec55f4fc6ee305bc5af052cf00eb1b0666a8f9bdbbd35b15040f2

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