Malicious PDF — malware analysis report

Static analysis result for SHA-256 a75acac7f665e5af…

MALICIOUS

PDF

35.3 KB Created: 2021-07-06 07:53:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 83c66748b1cc99d2331eabd3a02dda17 SHA-1: 36446012804579b1db50734adb5c91617873f163 SHA-256: a75acac7f665e5aff2bd70cb23774ecd2aa3dcac20591c879124505855c6a774
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs, with a primary focus on luring users with 'game hack' and 'free generator' themes. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates a deceptive intent, directing users to potentially malicious sites. While no scripts were explicitly extracted, the presence of numerous suspicious URLs suggests the document's purpose is to redirect users to external resources for malicious purposes, likely to download further malware or engage in 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.tw/app/406889139/coin-master-free-rare-cards-game-hack PDF link annotation
    • http://e-library.smkn1jombang.sch.id/repository/free-cracked-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/hack-para-coin-master-singapore_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/easy-points-gg_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/roblox-cheating-sex_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-get-free-robux-no-human-verification-on-mobile_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/hacks-for-dragon-ball-burst-roblox_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/freecoins_GM406889139.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/free-minecraft-svg-cutting-files_GM479516143.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/roblox-cheat-engine-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-much-pubg-uc_GM1330123889.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/robloxcom-robluks-for-free_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/how-to-get-free-robux-on-roblox-mobile-2021_GM431946152.pdfIn PDF document text
    • http://e-library.smkn1jombang.sch.id/repository/pink-paradigm-hack-created-by-lord-of-robux-explication_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
stream_002_off0000336e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x336E 23144 bytes
SHA-256: f2f104018b58c34aef11cb44a624996447467e195d6c0df86b96dcd5aa8b8018
font_01_sfnt_off0000677f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x677F 18172 bytes
SHA-256: a3a51abfb09dd8cc8c680b44d8dcba748961dcb74a322d8a0276fe6016e5b1e6

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