Malicious PDF — malware analysis report

Static analysis result for SHA-256 794fa3eb57ddce9c…

MALICIOUS

PDF

47.0 KB Created: 2021-06-03 08:20:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 548b3017f9566c0fe372a8669d79ced4 SHA-1: 6d16f763f27d7c32620b301bf6162c7489681c7d SHA-256: 794fa3eb57ddce9c4e4f26d268ad860ae04100e45a60bf261b2f17b44b8eef73
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacking, specifically 'Como Hackear Coin Master 2021', directing users to a suspicious URL. This URL, along with numerous others found in the document body, likely leads to a malicious site designed to exploit user interest in game cheats. The ML classifier also flagged this PDF as malicious, increasing confidence in its malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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 https://netcdn.online/app/406889139/como-hackear-coin-master-2021-game-hack PDF link annotation
    • https://elibrary.stp-aviasi.ac.id/repository/roblox-top_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/how-to-get-free-things-on-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/free-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/free-robux-reddit_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/free-roblox-hair-girl_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/free-minecraft-bedrock-server_GM479516143.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/coin-master-free-spins-link-without-human-verification_GM406889139.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/does-roblox-premium-expire_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/coin-master-hack-with-facebook-login_GM406889139.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/roblox-free-login_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/coin-master-link-spin_GM406889139.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/minecraft-hacks-xbox-one_GM479516143.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/install-free-game-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000537f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x537F 24344 bytes
SHA-256: ff213762b036bec7c8972d4ca46b90c5ff614ed292dcf46fc75e70ba4c6fcdc0
font_01_sfnt_off00008a8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A8D 2880 bytes
SHA-256: b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e
font_02_sfnt_off00009477.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9477 18380 bytes
SHA-256: 7d079b1918a151c222a156c250c5aa0e1b0afb08b6f17fdb7ccf3df79397c72b

Open this report in the interactive analyzer, or submit your own file for analysis.