Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f7807bdecb51ec0…

MALICIOUS

PDF

35.1 KB Created: 2021-07-03 15:28:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 9e49094459207afc7454608c604c35b9 SHA-1: 5cea1cca8e71ac78145f5305c8402832012bf8ab SHA-256: 9f7807bdecb51ec078c5877509625090b927745973077d31f2f7ce877507d332
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/406889139/coin-master-hack-app-link-game-hack PDF link annotation
    • http://library.apsidoarjo.ac.id/repository/free-robux-come_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-free-spins-hack-download_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/inmortal-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-hair-roblox-codes_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-undertale-game-script-hack_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-girl-pants-free_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/best-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-speed-hack-in-roblox-kick-off_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-gewicht-heben-simolator-3-hack-script_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/yt-comment-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-gift-hack_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-hack-roblox-mm2_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_off0000354c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x354C 22352 bytes
SHA-256: f42ac16fe80ad68015d02ab75f7808c839082c4e17750b8bcfbaf1053a964202
font_01_sfnt_off000066bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66BB 18180 bytes
SHA-256: 5b637a8a036eab97bffff91a515cae84fc40b6bddd589e778cc2e69a12b03167