Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e27e19fd17bd78c…

MALICIOUS

PDF

46.9 KB Created: 2021-06-03 09:46:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d6ba34a2e4844c6de6d1a887b18889a4 SHA-1: 51a35a139e1d6984d93f9ea8cf6b3ca9e90a0bc1 SHA-256: 8e27e19fd17bd78c80a909ab8be001786fea5be2bdd8a2d15f209d98f89f0046
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and free spins, directing users to a malicious URL. The ML classifier strongly indicated maliciousness, and the presence of multiple embedded URLs further supports a phishing or redirection-based attack. No scripts were extracted, but the document's structure and embedded links are designed to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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/free-spins-coin-master-2021-game-hack PDF link annotation
    • http://www.library.umbjm.ac.id/repository/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/como-hackear-coin-master-2021-espaol_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-daily-free-spin-and-coin-link-haktuts_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/pubg-uc-earning-app-in-pakistan_GM1330123889.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/worst-roblox-avatars_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-daily-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/new-free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-free-spins-save_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/minecraft-apk-114_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-game-hack-app_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_004_off00005182.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5182 24820 bytes
SHA-256: dce8d5c5c9aaad4d17448fbf3e87ab00a9393ffc8c8b8d45798f8292b0bbc0c6
font_01_sfnt_off00008acb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ACB 2840 bytes
SHA-256: 30dce2b9c1950da345d7fed8f00c38887adfa2f2ddecc31775af2315e819ac37
font_02_sfnt_off0000947e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x947E 18288 bytes
SHA-256: 9732707b45c862b7a6ef8ea2418900def9be3650c6b325207d932644f64622ad

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