Malicious PDF — malware analysis report

Static analysis result for SHA-256 14c2328a71e20619…

MALICIOUS

PDF

44.7 KB Created: 2021-05-12 11:39:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4a62c376d7d2fc5424bb4cde8ea10e73 SHA-1: b466de2571e5922aee97f6f52ecbb068018dd742 SHA-256: 14c2328a71e20619f06a914f0ddb0a6965f23df342bc4384814453415626ee16
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 0.9632

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.xyz/app/406889139/free-400-spins-coins-master-game-hack PDF link annotation
    • http://www.nfca.org.tw/upload/files/how-to-get-free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/scary-larry-roblox_GM431946152.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/robux-online_GM431946152.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/coin-master-hack-for-android_GM406889139.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/coin-master-free-spins-link-download-today_GM406889139.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/roblox-script-hacks_GM431946152.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/coin-master-free-gold-cards_GM406889139.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/coin-master-game-hack_GM406889139.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/apk-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/play-roblox-for-free-on-google_GM431946152.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/minecraft-free-install_GM479516143.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/earn-robux-today_GM431946152.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/how-to-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.nfca.org.tw/upload/files/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048c7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48C7 25452 bytes
SHA-256: 08515635a9cae7022889baf81a23e6729c476431db7c6ac102acf3e212064493
font_01_sfnt_off000082f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82F1 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008ca3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CA3 18120 bytes
SHA-256: 83d73b5d15900ebf4c8e8e4c37772eeea58eeced4667d8a4ec0d9f93b93c7b15

Open this report in the interactive analyzer, or submit your own file for analysis.