Malicious PDF — malware analysis report

Static analysis result for SHA-256 effcb893645dacd0…

MALICIOUS

PDF

45.0 KB Created: 2021-05-11 09:06:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e91748cf7d0855e0943cff1c2bdbd222 SHA-1: 528afdd498d7ffbd213437f0a68b062ed3938858 SHA-256: effcb893645dacd0a52f0fea9c2b63f479b30df38ff7a80be62950d9c40e4dcb
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 0.9632

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/406889139/coin-master-hack-apk-ios-game-hack PDF link annotation
    • http://biotronics.com.cy/images/coin-master-free-spinv1-0apkpure-com-apk_GM406889139.pdfIn PDF document text
    • http://biotronics.com.cy/images/free-roblox-clothes-girl_GM431946152.pdfIn PDF document text
    • http://biotronics.com.cy/images/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://biotronics.com.cy/images/minecraft-net-free_GM479516143.pdfIn PDF document text
    • http://biotronics.com.cy/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://biotronics.com.cy/images/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://biotronics.com.cy/images/gaming-dunia-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://biotronics.com.cy/images/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://biotronics.com.cy/images/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://biotronics.com.cy/images/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://biotronics.com.cy/images/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://biotronics.com.cy/images/coin-master-hack-no-verification-no-signup_GM406889139.pdfIn PDF document text
    • http://biotronics.com.cy/images/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • http://biotronics.com.cy/images/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://biotronics.com.cy/images/free-spins-coin-master-apple_GM406889139.pdfIn PDF document text
    • http://biotronics.com.cy/images/coin-master-free-spins-and-coins-app-download_GM406889139.pdfIn PDF document text
    • http://biotronics.com.cy/images/free-coin-master-s_GM406889139.pdfIn PDF document text
    • http://biotronics.com.cy/images/coin-master-35-2-hack_GM406889139.pdfIn PDF document text
    • http://biotronics.com.cy/images/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://biotronics.com.cy/images/free-spins-october-28-2021-coin-master_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
stream_003_off00004b4f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B4F 25392 bytes
SHA-256: dd0054c259efd8519579f186667d0aa23716a9b8856f8fcc0cd74f85e29f5b90
font_01_sfnt_off000084d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84D9 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008e8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E8A 17892 bytes
SHA-256: 842ebafe75553617aa3406336693b508b1df3cd42ae030bb56c7cc7ab7429b4f

Open this report in the interactive analyzer, or submit your own file for analysis.