Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4fe201b260afbd4…

MALICIOUS

PDF

43.9 KB Created: 2021-06-03 12:29:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 9ac671076852b0d34a014d0cbcddeb8e SHA-1: 314c16a1319796f5013f134dd67380f2c54aff78 SHA-256: e4fe201b260afbd43f20985c9614b40880d05f3c95a1095003c9e8ae8dbf9a9a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a "Coin Master Hack" and links to external URLs that likely host malicious content or further redirects. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to trick users into downloading potentially harmful software. No scripts were extracted, but the document's structure and linked content suggest a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/coin-master-hack-pc-download-game-hack PDF link annotation
    • http://library.ulb.ac.id//repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/hack-crack-for-coin-master-currency_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/real-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-free-spins-save_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/app-store-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-spins-link-download-today_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-free-printables_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/earnrobux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-printable-roblox-images_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-free-spins-grom-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-robux-group_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-game-packs-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-rewards-coin-master_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_004_off00004ed7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ED7 25476 bytes
SHA-256: fefa1982b51f45f9b025049607a107597910886dd236d1d0654c0a820edf0ec6
font_01_sfnt_off00008854.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8854 18448 bytes
SHA-256: 1a77b19ae755b2674c1484136c2a6f206883130a3eb8aa78e1aa84be95f9bf15

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