Malicious PDF — malware analysis report

Static analysis result for SHA-256 9232d3166909c29c…

MALICIOUS

PDF

46.0 KB Created: 2021-06-04 02:05:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 08f88008bcd92e287c43e0f221a29712 SHA-1: 80ed2f6debb1acd73cf3e1c9649928ee870eba07 SHA-256: 9232d3166909c29c20e1ac2bcff36c4388c0a02083a437cc862742d9573ec201
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 0.9864

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 https://netcdn.online/app/431946152/how-to-get-free-robux-not-a-scam-game-hack PDF link annotation
    • http://lib.untad.ac.id//repository/100-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/hack-coin-master-pc_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-500-tiktok-views_GM835599320.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/www-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-free-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-whatsapp-tik-tok-status-download_GM835599320.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/get-robux-today_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/roblox-getting-hacked_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/pokemon-go-free-coins-hack_GM1094591345.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/online-hacking-tricks-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/blogspot-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/minecraft-pc-free_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
stream_004_off0000533f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x533F 27632 bytes
SHA-256: 1b8207133601c3e7d4337312df08ddc52d054d79ce9ad202b8454b0319f9d7a8
font_01_sfnt_off00008ff9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FF9 18768 bytes
SHA-256: 022361ef70d0601eb321de045a15355e0ef134abc2a3262f50e5e6000d82738d

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