Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ee9c791c671fbff…

MALICIOUS

PDF

46.5 KB Created: 2021-06-03 06:36:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8e77e6ff26907e2890e3a5694701e938 SHA-1: ecb14aa0664580dcafa9c972aa431b5353b78292 SHA-256: 2ee9c791c671fbff2ff2899b3a4732e77b12fa125a7a6c0cfe87b09f0bc18462
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 0.9832

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/431946152/how-to-get-free-robux-without-verification-game-hack PDF link annotation
    • http://library.umuslim.ac.id/repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/wurst_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-is-tiktok-free_GM835599320.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-hack-that-actually-works_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/claim-roblox_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-hack-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-admin-roblox_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-to-get-free-mods-in-minecraft_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-spin-links-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-play-as-guest-free_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-download_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/does-roblox-premium-expire_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-hack-without-verification-ios_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-private-minecraft-server_GM479516143.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_off000054a9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x54A9 25884 bytes
SHA-256: eeec2a17236fd35339ec2a1c564b426c6643b7e6b87bc0ae8a1f1a0b0ac97554
font_01_sfnt_off000090f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90F2 19128 bytes
SHA-256: fe2fba94a2d86c9c71a87afecb14f9f9cb432365285dbf62d8027955010708b1

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