Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bc9c4ea0c7dbc1a…

MALICIOUS

PDF

32.9 KB Created: 2021-07-03 22:58:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: aa968ac1598f07f125231b52d67fb5e2 SHA-1: 2a910b482522b8f25f6a4ddf1f4dcfb371327069 SHA-256: 9bc9c4ea0c7dbc1ad254946d3f74ea63b5bf21176b71db872b76502a1b0ad7a8
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 0.9980

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/479516143/hacker-minecraft-song-game-hack PDF link annotation
    • http://abdinusababellibrary.ac.id/repository/tower-defens-roblox-simulator-hack_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id/repository/hacker-fly-roblox_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id/repository/people-on-roblox-who-give-free-things_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id/repository/roblox-robux-hack-2021-no-download_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id/repository/synapse-download-roblox-hack_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id/repository/free-robux-rbxbost_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id/repository/how-can-i-get-free-robux-super-easy_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/100-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/what-is-coin-master_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-minecraft-skins-girl_GM479516143.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/roblox-generator-no-human-verification_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_off00002e63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E63 21844 bytes
SHA-256: e1fd2f4ea1246a1feccf74c4afb34cbca52117d76d04d947cf13f3a35fabdd3b
font_01_sfnt_off00005e57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E57 18168 bytes
SHA-256: 37e3c409e679a213a10e0592b8ff177cf348fa9834d19b03b17241e7ed0c948b

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