Malicious PDF — malware analysis report

Static analysis result for SHA-256 a969d39d6407d668…

MALICIOUS

PDF

34.7 KB Created: 2021-07-04 07:43:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: e7d6f78d7c9cbfc3f9d6ee5d5f7e5329 SHA-1: 416ab219e6a409e61d0ca7fe2a27da0716241ccb SHA-256: a969d39d6407d66850c91a2b6429c16917289b29b1c91526116e207ccd8252a7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a known malicious redirector, under the guise of providing game hacks and generators. The document body and embedded links suggest a lure for users seeking cheats or in-game currency for games like Minecraft and Roblox. The presence of multiple redirector links indicates a strong intent to direct users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/479516143/how-to-download-minecraft-hacks-game-hack In PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-minecraft-mods-for-pc_GM479516143.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-roblox-accounts-to-use_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/como-parecer-hacker-en-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-online_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/did-momo-hack-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/what-do-colours-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-roblox-intro-maker_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/instalar-hacks-de-comandos-de-admin-para-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/earn-robux-now_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-hack-jojos-bizarre-side-project-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-colouring-pages-free_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-download-android-free_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-robux-hack-net_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-robux-generator-gg_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_off000033a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33A2 21852 bytes
SHA-256: e478780de7b68b015a677ca489b6456ffe6a892e5fb7c94aa165c1097fa2c138
font_01_sfnt_off0000639b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x639B 18748 bytes
SHA-256: d3c6952994d6e24d3bacf5184ddbc3a45400015c11867e6fcafaa525ffd68a7f

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