Malicious PDF — malware analysis report

Static analysis result for SHA-256 02070ba3907e10e1…

MALICIOUS

PDF

46.6 KB Created: 2021-05-11 19:00:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d46abba49592bb2af1db7d24b048ff57 SHA-1: 62470c472114ac4b9840fd326440659ad8fc291a SHA-256: 02070ba3907e10e1874de119d54a9bc418e67eeffcd503ccd86e28e7a77e378f
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are structured as 'free generator' or 'game hack' lures. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting a link farm designed to attract users with promises of in-game currency or cheats. The primary URL, 'https://netcdn.xyz/app/431946152/how-do-you-get-free-robux-on-roblox-game-hack', reinforces this theme. While no scripts were explicitly extracted, the nature of the links and the 'ML_NYX_PDF_MALICIOUS' flag suggest a high likelihood of redirection to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/431946152/how-do-you-get-free-robux-on-roblox-game-hack PDF link annotation
    • http://lib.icbc-indonesia.org/repository/free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/coin-master-cheat-codes-free_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/coin-master-hack-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/coin-master-free-coins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/install-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/how-many-levels-are-there-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/coin-master-rewards-app_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/arsenal-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/coin-master-free-spin-and-coin-link-today_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/oprewards-com-robux_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/coin-master-hack-apk-app_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/cheats-coin-master-free-spins-and-news_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/minecraft-apk-download-v1-144-2-free_GM479516143.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_off00004960.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4960 26352 bytes
SHA-256: 5d0757dd58760f6610dbfe984255aaa0af069855b1382716bcff3e24e0466da2
font_01_sfnt_off00008532.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8532 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009243.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9243 18688 bytes
SHA-256: 1a1edbb4620230d43f84097700922ea11c75fa5ad69815b80eb1b16329c7dce0

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