Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff267af2eb489c59…

MALICIOUS

PDF

50.2 KB Created: 2021-06-10 17:34:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ba8d26ac737de6574da2ede1a924dec7 SHA-1: 106dc0826fb478133a4d8502e905432c66656fd7 SHA-256: ff267af2eb489c59ebb7b3ca8a84738722fb2e0f5837a00bf9be3d212b0af83c
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 0.9789

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.tw/app/431946152/how-do-you-hack-roblox-ultimate-driving-game-hack PDF link annotation
    • http://library.umuslim.ac.id//repository/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-get-roebucks_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-hack-iosgods_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-change-your-name-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/robux-download_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/bbg-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-spin-hack-app_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-free-spins-link-ios_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/hack-the-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-apk_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-coin-link_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-to-get-minecraft-pe-for-free-ios_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/dailyrobux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-cheat-codes-free_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004fae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FAE 28376 bytes
SHA-256: 79689b3240bff1368aa94b35cf742058026190f956c8583836909e063a28740a
font_01_sfnt_off00008fd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FD7 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009ce8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CE8 19888 bytes
SHA-256: 6c238e8fd0d2e0bcd20dc2dd072c970b8a33f7a2fefcba0b22b06b74d855219b

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