Malicious PDF — malware analysis report

Static analysis result for SHA-256 760d5febd5ef46ad…

MALICIOUS

PDF

42.2 KB Created: 2021-05-19 02:37:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: cdaee829ab0d0c5191258a7eb5f2e82b SHA-1: 12bd38cf9939919cae06c981c700ae1a9bbf93e3 SHA-256: 760d5febd5ef46ad34870e964f5f92094bef757a35c0f8df5a9591c9e787becf
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 0.9971

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.xyz/app/479516143/are-minecraft-realms-free-game-hack PDF link annotation
    • http://library.acehresearch.org/repository/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/coin-master-free-spins-app-android_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/coin-master-apk-mod-hack-download_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/how-to-hack-coin-master-spin-ios_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/toolbox-for-minecraft-ios_GM479516143.pdfIn PDF document text
    • http://library.acehresearch.org/repository/coin-master-hack-twitter_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/how-to-get-free-followers-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/http-blackgamesus-coinmasterhack_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/pubg-uc-event_GM1330123889.pdfIn PDF document text
    • http://library.acehresearch.org/repository/2021-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/wurst-mc_GM479516143.pdfIn PDF document text
    • http://library.acehresearch.org/repository/minecraft-tower-defense-hacked_GM479516143.pdfIn PDF document text
    • http://library.acehresearch.org/repository/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.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_003_off00004a53.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A53 25560 bytes
SHA-256: 19d6c054ac3b2585cca7bdd83f74cfc273bbdc7aa1ff7177ad2d3dc7e0b6fd1c
font_01_sfnt_off000083fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83FD 17900 bytes
SHA-256: 8eb15ed8310af5fb76432a47ac68b1e7755fcf2aff13e182d9ea68cdb87c7182

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