Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e0afbc71336eb1b…

MALICIOUS

PDF

34.8 KB Created: 2021-07-06 12:12:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c8a9785a28ef0bb8404d7bf2b5103edb SHA-1: 99effee061948a75c0ece6f85b3bc03310f5d11a SHA-256: 2e0afbc71336eb1bbad8aaa8de031d3d9f92f999a28e375ba85a29e41880e2e6
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/406889139/free-spins-on-coin-master-cheat-game-hack PDF link annotation
    • http://perpus.fisip.unnur.ac.id/repository/roblox-how-to-get-free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/how-to-hack-on-boombox-island-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/legit-coin-master-hack-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/claim-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/haktuts-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/is-minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/roblox-ban-hack_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/roblox-free-stylish-animation_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/roblox-pokemon-brick-bronze-hack-2021_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/coin-master-lucky-patcher-hack_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/coin-master-hack-ios-download_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/roblox-hack-get-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/kazok-youtube-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/roblox-system32-host-file-hack_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/is-it-safe-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/coin-master-free-gold-cards-link-2021ee-spins_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/hack-a-game_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_002_off00003056.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3056 23400 bytes
SHA-256: 4510608fb6476f9f2636c26c3d1ad5d85f1ecb58f2806ec725a0a18d399ec41c
font_01_sfnt_off0000652e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x652E 18340 bytes
SHA-256: 08b0fb1345edf1632942f09adf46a0efdd88eab44e78d1010021a2ae91dc1f3f

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