Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a81cc0511300ca4…

MALICIOUS

PDF

46.4 KB Created: 2021-05-12 01:39:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: f94fd28ac914a0635665f1e887a56c70 SHA-1: 039d2f98a5fff590d7eb41655fcc2bf1a7f7045b SHA-256: 1a81cc0511300ca440968e0e2f7cfe78a5ed611147aa394a544e7e7608e8c884
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains links and text that lure the user into clicking on a URL promising game hacks or free currency. The primary URL, https://netcdn.xyz/app/406889139/coin-master-free-spins-link-download-free-game-hack, is identified as a game hack redirector. The document's structure and embedded URLs suggest it is designed to drive traffic to potentially malicious websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/coin-master-free-spins-link-download-free-game-hack PDF link annotation
    • https://zabota-kashira.ru/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://zabota-kashira.ru/images/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • https://zabota-kashira.ru/images/free-coin-master-game_GM406889139.pdfIn PDF document text
    • https://zabota-kashira.ru/images/coin-master-free-spins-2021-today_GM406889139.pdfIn PDF document text
    • https://zabota-kashira.ru/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://zabota-kashira.ru/images/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • https://zabota-kashira.ru/images/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • https://zabota-kashira.ru/images/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • https://zabota-kashira.ru/images/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://zabota-kashira.ru/images/completed-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://zabota-kashira.ru/images/minecraft-java-edition-download-free_GM479516143.pdfIn PDF document text
    • https://zabota-kashira.ru/images/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • https://zabota-kashira.ru/images/roblox-t-shirt-free_GM431946152.pdfIn PDF document text
    • https://zabota-kashira.ru/images/coin-master-home_GM406889139.pdfIn PDF document text
    • https://zabota-kashira.ru/images/coin-master-free-spins-and-coins-link-haktuts_GM406889139.pdfIn PDF document text
    • https://zabota-kashira.ru/images/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://zabota-kashira.ru/images/coin-master-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • https://zabota-kashira.ru/images/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://zabota-kashira.ru/images/scary-larry-roblox_GM431946152.pdfIn PDF document text
    • https://zabota-kashira.ru/images/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d56.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D56 25192 bytes
SHA-256: 4d3c2b54bef97a852d5c94f574ab5f65b0f9ce2a7f6b5f68433d14566f25e9bc
font_01_sfnt_off000087b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87B0 2944 bytes
SHA-256: fcfcd28869b8d6c7503d63ed8d48371ec5b580fea2733193e2acbb82b3d30a76
font_02_sfnt_off000091db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91DB 18636 bytes
SHA-256: e0ee4d28e9fbd90893640acb023fdb3433a7d18e360fd79b0a1965f7934d0c46