Malicious PDF — malware analysis report

Static analysis result for SHA-256 29a59fbf3349be27…

MALICIOUS

PDF

45.1 KB Created: 2021-06-09 12:33:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 136460a5cf4b17f90a72aa98f146015d SHA-1: fe7ecc0fa89fd43679fb87d403ffcc0ee620646a SHA-256: 29a59fbf3349be275cdadc8016f9b9366ef68b1f0d3b9e0c699938eef875fade
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/free-roblox-lua-executor-game-hack PDF link annotation
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/coin-master-50-spin-link_GM406889139.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/free-robux-meme_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master-that-work_GM406889139.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/free-robux-mod_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/minecraft-com-free_GM479516143.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/www-rubux_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/links-to-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/just-go-to-mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/minecraft-tools_GM479516143.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/how-to-make-a-minecraft-java-server-for-free_GM479516143.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_004_off000052d8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52D8 25308 bytes
SHA-256: 25cca9125976ef7dc831547a9d7721847fbac01c7c8401882f639aa521612687
font_01_sfnt_off00008d56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D56 18420 bytes
SHA-256: 59159da11c01ac48f9d230d89af4aec6c62d9955a6e04e76cc0843fc28247f09

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