Malicious PDF — malware analysis report

Static analysis result for SHA-256 f73d4c20ced011d7…

MALICIOUS

PDF

34.1 KB Created: 2021-06-20 09:55:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a880c94b442ae623f8b5ea0a23e262f4 SHA-1: aea8ecff8d2d63d6bf3bc5c2b8219e768eef56fa SHA-256: f73d4c20ced011d7293fc13e3b8c732b6e8d5b53e5ef0f6459ca82be21d58473
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.co/app/431946152/free-robux-generator-no-survey-game-hack PDF link annotation
    • http://www.eptaviation.com/images/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • http://www.eptaviation.com/images/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.eptaviation.com/images/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.eptaviation.com/images/how-to-get-a-free-membership-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/free-minecraft-capes-no-mods_GM479516143.pdfIn PDF document text
    • http://www.eptaviation.com/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/minecraft-java-free-account_GM479516143.pdfIn PDF document text
    • http://www.eptaviation.com/images/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://www.eptaviation.com/images/roblox-com-free-play_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/weight-lifting-simulator-2-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.eptaviation.com/images/how-to-make-cheat-engine-on-roblox-not-crash_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/bad-minecraft-free_GM479516143.pdfIn PDF document text
    • http://www.eptaviation.com/images/free-robux-no-password_GM431946152.pdfIn PDF document text
    • http://www.eptaviation.com/images/how-to-get-hacks-on-roblox_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_off00002fe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE0 21856 bytes
SHA-256: 1be7b36ce80a423506e6266ccc61b96769ee5529ab0469986a0bf00f2b9d3768
font_01_sfnt_off0000600b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x600B 19112 bytes
SHA-256: 33dfcb2d47e73eef9736d676cbbc8a7ec86e5e18ee4675d0e02e08c00d2a765b

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