Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8928196fc95e910…

MALICIOUS

PDF

32.5 KB Created: 2021-07-23 18:22:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b60c9cb5acee6238892bdd420cc1747a SHA-1: 9303a77ee24ba77eaf7a74e7c58abebb6e682587 SHA-256: b8928196fc95e910b17c2ba96decece5d6e48a1ee46512dc96efeb82afae515b
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 0.9900

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/835599320/how-to-get-free-tiktok-coins-game-hack PDF link annotation
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/free-mods-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/how-to-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/minecraft-realms-free_GM479516143.pdfIn PDF document text
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/free-minecraft-account_GM479516143.pdfIn PDF document text
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/free-tiktok-followers-app_GM835599320.pdfIn PDF document text
    • https://e-learning-mtsn1pati.sch.id/__statics/gudangsoal/files/classic-minecraft-net-hacks_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
font_00_sfnt_off00002d36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D36 22464 bytes
SHA-256: c7e2b7f87b8084a00b6bc78c109cf035c7d027e28f0909584fa1e280edc7c994
font_01_sfnt_off00005f19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F19 17620 bytes
SHA-256: 5e08b925a0f8fe2d80e54c1999b1c3763f905cccf1acde0f5739739445e42325

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