Malicious PDF — malware analysis report

Static analysis result for SHA-256 0815ba57dc75ea43…

MALICIOUS

PDF

45.2 KB Created: 2021-06-03 06:56:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 65dfae5e0e5aa1d82191ac076ba49dcd SHA-1: 61315fcd14103d0f0cb045dd03c2a45a32bf08f8 SHA-256: 0815ba57dc75ea4374fe561efbe47519b114372dd5e0673e42df03fee4f56c0b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'free Robux generator' and links to external URLs that are likely part of a scam or malware distribution. The document body and heuristics indicate a clear intent to trick users into visiting malicious sites. No scripts were extracted, but the embedded URLs and the nature of the lure suggest a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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/431946152/get-free-robux-generator-game-hack PDF link annotation
    • http://e-library.smkn1jombang.sch.id/repository/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-get-free-faces-on-roblox_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/hackear-coin-master-sin-verificacion_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/pubg-uc-via-login_GM1330123889.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-spin-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-be-a-hacker-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-coins_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/8bp-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-roblox-svg_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-online-hack-generator_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/follower-fr-tiktok-free_GM835599320.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_off0000531a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x531A 25400 bytes
SHA-256: 4caafc7081d3bed28ed90bc97215e68491c5dfca6cfed25ca8396c5bfaf090da
font_01_sfnt_off00008e05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E05 18344 bytes
SHA-256: 3242c4573a8204327cdf084b118e3b23cfd789fa9551ab2d205e53ac9add3c4b

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