Malicious PDF — malware analysis report

Static analysis result for SHA-256 7be910060f284290…

MALICIOUS

PDF

34.2 KB Created: 2021-07-05 10:31:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e14d54992fc3e86082f0fc642bb20bac SHA-1: 4f394fa5e7f09ed69d30d98da2441cde86792a32 SHA-256: 7be910060f2842901b5934bfe4acf2c33045843b49499e4768c7789d1b80a830
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-hack-spins-apk-game-hack PDF link annotation
    • http://www.digilib.uim.ac.id/repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/coin-master-free-spins-11-01-2021_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/robux-today_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/how-to-get-to-village-3-in-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-roblox-injector_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/roblox-lightning-hack_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/fast-card-roblox-free_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-clothes-of-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-t-shirt-decals-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/free-black-jacket-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-robux-generator-roblox-game_GM431946152.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/free-coin-master-glitches_GM406889139.pdfIn PDF document text
    • http://digilib.uim.ac.id/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.digilib.uim.ac.id/repository/how-to-get-free-roebucks-in-roblox_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
font_00_sfnt_off000030ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30EC 22588 bytes
SHA-256: 5780d88401b7f5b53af11cdfa352f5a63bc9722261f81a57f43ebd23943320f1
font_01_sfnt_off0000630a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x630A 18180 bytes
SHA-256: 1e953b72540ec4677b5f3a09436cf02581c7252e246dbe5ac414cafa51ba2d5d

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