Malicious PDF — malware analysis report

Static analysis result for SHA-256 e479b7c97ecf793e…

MALICIOUS

PDF

34.8 KB Created: 2021-06-25 18:57:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: b04abc64816484ade20fb7c9d155bea8 SHA-1: 0674dea476655cc1fe8a249eeb6fb1d836ab7a8a SHA-256: e479b7c97ecf793eacf0615eef3ec5cc3a4135ef9f8e426fe2319e0a08131d32
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one specifically identified as a 'game hack' lure, which is a common social engineering tactic. The ML classifier also strongly indicated maliciousness. The presence of embedded URLs suggests the document is designed to redirect users to external sites, likely for downloading further malicious content or phishing.

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.co/app/431946152/autofarm-hack-roblox-pjj-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id/repository/make-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/links-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-god-mode-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-can-i-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/gamekitcom-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/minecraft-kill-aura_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-how-to-get-free-accses-to-welcome-to-bloxburg_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-coins-for-flip-master-online_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-roblox-for-free-on-pc_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-roblox-avatar-gear_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/hack-para-canbiare-el-nombre-en-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/toolbox-for-minecraft-pe-ios_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-hair-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-redeem-codes-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-group-payouts_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_off00002f81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F81 22552 bytes
SHA-256: 7009b5939cb6d355a8885d8c0656f09b6180e8be22d4672f6e9c0a626cbe3b43
font_01_sfnt_off000061ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61BA 19500 bytes
SHA-256: 8fd56410efd8efe3f98c4cac560e8b153286cc4af09d6b7efd33338b1770693b

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