Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f7ad57a7bd53604…

MALICIOUS

PDF

32.7 KB Created: 2021-07-20 15:50:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 67780a4bed844ba7784f106f3947b34a SHA-1: 48f13491e24b746ca02d6ebfd7dc914fb076f534 SHA-256: 0f7ad57a7bd536048eba7c446c208714320ecf881e9fc02bddedecbf4c5fe006
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/get-free-tiktok-likes-game-hack PDF link annotation
    • https://perpustakaan.unitomo.ac.id/repository/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-tiktok-followers-no-downloads_GM835599320.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/minecraft-online-free-no-download_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_off00002ca0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CA0 22956 bytes
SHA-256: 0e6d12e495cf13d441297d2a0e97cc38a8d98388f0bc20b45ed309a9fe7875be
font_01_sfnt_off0000601d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x601D 17456 bytes
SHA-256: c397690cc80b7cdd5818f6212e28c5067632df1cbe38d70f20361ec61b14abd9

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