Malicious PDF — malware analysis report

Static analysis result for SHA-256 d63744cd641326a4…

MALICIOUS

PDF

36.4 KB Created: 2021-07-04 07:59:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 09bee7c7f1a7f0b9afaf94f32468ca2a SHA-1: 553f8f1fe99d8bdf32435e99bf1dae0af879c28a SHA-256: d63744cd641326a4e0d22ab97376e2bf71c9c18c013a3b087a0c6d936436601c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-risk heuristic firing for a game hack lure, directing users to a suspicious URL. The document body explicitly mentions 'Coin Master Hack Mod Apk Unlimited Spin Download' and includes the same URL, indicating a phishing attempt to trick users into downloading potentially malicious software. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

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-mod-apk-unlimited-spin-download-game-hack PDF link annotation
    • http://library.apsidoarjo.ac.id/repository/what-is-coin-master-app_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/toolbox-for-mcpe_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/beautiful-hair-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/spin-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/pubg-uc-transfer_GM1330123889.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/oginject-co_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-free-spins-ios_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-spins-for-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-hack-robux-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-no-human-verification-site-wwwjeuxvideocom_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/lemonaid-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/all-links-for-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-apk-ios_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/pastebin-roblox-hack-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-mod_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-spins-and-coins-for-coin-master-game_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_off0000333f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x333F 23708 bytes
SHA-256: cda833eac624e2a350f51c58f160faabef946d6118da9778e233e4f9045f7e21
font_01_sfnt_off00006904.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6904 19208 bytes
SHA-256: 168ed34bac05dcfadb60f7a37d17c2e91e9de75542f03c32a69fdbfa53a2f5ea

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