Malicious PDF — malware analysis report

Static analysis result for SHA-256 f566a46876bf00f5…

MALICIOUS

PDF

51.3 KB Created: 2021-06-03 11:36:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 34e083c2f39c5d04ddda81e0c6e663d0 SHA-1: e667035a618f42db582308eca1b0d4fa9a6f640e SHA-256: f566a46876bf00f5ee348f7ac245bea7858960091861e4b6cd63f90f1376fb8b
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 0.9685

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/rbx-gg-free-robux-game-hack PDF link annotation
    • http://perpus.masda.ac.id//repository/spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-daily-free-spins-today_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-do-you-hack-for-2021000-coins-on-flip-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-spins-link-fb_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-attack-hack-apk_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/toolbox-mod_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/pubg-uc-midasbuy_GM1330123889.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/games-like-minecraft-but-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/hack-coin-master-spin-apk_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/impact-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-getting-hacked_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/hack-coin-master-apk-32_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/play-roblox-free-online_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000052d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52D9 24892 bytes
SHA-256: 3090b434d28fb4aa692b6ba739fdb6e5996898cb265c2e01b2bd629bf8873410
font_01_sfnt_off00008be3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BE3 3656 bytes
SHA-256: 9f0b708049ba3a27fe71af9d3da5d823b566ea88c56b157492a6ea759b34d87c
font_02_sfnt_off0000989b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x989B 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_03_sfnt_off0000a5ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5AD 18304 bytes
SHA-256: d1ad45f5b083d36c6ec4c124be04f92537ae8dd31535970cb7662339535ad89d

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