Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcfcb97922de92d7…

MALICIOUS

PDF

35.3 KB Created: 2021-07-04 11:56:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5c9f2a7e2beb441617cd1a44f42e11dd SHA-1: 6867b485fb484744ed69dd391bda9d275a5f9ebe SHA-256: dcfcb97922de92d79be6fe251058e40c2c8e6fb11f739c287cb937895b2f63ac
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/coin-master-100-spin-game-hack PDF link annotation
    • https://www.sonestad.se/library/repository/coin-master-daily-bonus-hack_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-hack-version-download-ios_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-daily-free-link_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/install-free-game-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/minecraft-free-education_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-minecraft-server-maker_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-hack-version_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-robux-services_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-spins-coin-master-twitter_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/minecraft-bedrock-edition-hacks_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-limiteds-roblox_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-roblox-shirt-templates-2021_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/is-minecraft-free_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-spins-free-2021_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/minecraft-java-edition-free-trial_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-spins-hack-iphone_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_002_off0000327a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x327A 23372 bytes
SHA-256: 6a68807f6a0282d22f56d51372828c0912e00aa62eac72e86a2d85be941c1c9c
font_01_sfnt_off00006708.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6708 18288 bytes
SHA-256: e7eedd1d7f2d1bddccca1a35bcbf42f4aa03d5dcfedc55eaf08a1a6e6f1d261c

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