Malicious PDF — malware analysis report

Static analysis result for SHA-256 a82e94897130facf…

MALICIOUS

PDF

33.7 KB Created: 2021-07-06 05:57:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: de90895a8489fc6411f4de404aedd5bf SHA-1: 34cc30964d2c2d5250b7059163302b9a909c7213 SHA-256: a82e94897130facfe505844ad39ace0c8f89b7223443e2e18feec262b4696c0d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a game hack, directing users to a malicious URL. The ML classifier strongly indicated maliciousness, and the presence of numerous suspicious URLs suggests a phishing or scamming attempt. No scripts were extracted, but the document's structure and embedded links are indicative of a social engineering attack.

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/406889139/coin-master-hack-online-android-game-hack PDF link annotation
    • http://digilib.stie-yppi.ac.id/repository/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/good-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-no-surveys-or-human-verify_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-free-spins-hack-download_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-no-human-verification-2021-mobile_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/body-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-free-items-in-roblox-catalog_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-speed-hack-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/9-billion-robux-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-script-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-spins-coin-master-october-13-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-free-download-for-pc_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-beyond-level-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/minecraft-free-download-ipad_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-card-generator-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/best-free-spin-app-for-coin-master_GM406889139.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_off00003096.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3096 21920 bytes
SHA-256: eb3671c48447dde093b30302b6242c5b863a57f8435105227b2f5e2bc457df48
font_01_sfnt_off000060ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60ED 18252 bytes
SHA-256: 9d14639a3f19f86eca98ac18afee044b618570524dd00cbb837dbeea23a098ef

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