Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5cd47bd241858dd…

MALICIOUS

PDF

35.3 KB Created: 2021-07-05 17:49:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: fa214d11432d7041d17cc37a25d68811 SHA-1: 947862e01f3fcb4f51b76dc73f3e8ec2562d211f SHA-256: e5cd47bd241858dd1c7e4238306b87b9dcab4d149e6f8093ca7afd4b2bb8de28
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/how-to-get-free-coins-on-coin-master-iphone-game-hack PDF link annotation
    • http://perpus.unpam.ac.id/repository/free-attacks-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-blogspot_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-tricks-and-hacks_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/robux-sign_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/easy-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-roblox-survival-games_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/roblox-free-login_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/how-to-get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-hack-programmers_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/optifine-pe_GM479516143.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/nike-roblox-free_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-robux-2021_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_off00003323.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3323 23096 bytes
SHA-256: a930ccdd836c425b54b0d842eeebb91d2ad54b295099475bf05c3fe195219f0b
font_01_sfnt_off00006702.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6702 18504 bytes
SHA-256: 395fc550c26729eff2306150ae31713d8bd4c4ff218e2b94d4b8ad057d21bb45

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