Malicious PDF — malware analysis report

Static analysis result for SHA-256 37e0d500bcda64da…

MALICIOUS

PDF

35.8 KB Created: 2021-07-05 16:00:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: c0808509473548da41f89f817e6d432b SHA-1: d649516dc73c666430b361a02f53b051d2189da8 SHA-256: 37e0d500bcda64dac4cf0d4288ff42122ff87542552b284221681b9114666074
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'generators'. The primary lure URL is http://netcdn.tw/app/406889139/coin-master-hack-without-root-game-hack. This indicates a social engineering tactic to trick users into visiting potentially harmful sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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 http://netcdn.tw/app/406889139/coin-master-hack-without-root-game-hack In PDF document text
    • http://lib.fisipumt.ac.id/repository/hunting-rifle-hack-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-mod-apk-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-exploits-for-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-roblox-hair-codes_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/is-minecraft-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-hack-without-root_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/comment-cheat-les-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-recorses-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/dominus-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/http-free-robux-cf-1-minute_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/money-cheats-for-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-any-username-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-robux-on-roblox-on-pc_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/rewardrobux-com_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/one-piece-millenium-roblox-found-a-hacki-book_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-hack-2021-working-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.htmlIn 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
font_00_sfnt_off0000344b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x344B 23236 bytes
SHA-256: 2c188fcaaa94146874871db82f5ee3c2ee4a0bcdd35bad14d45f63f4dc718a70
font_01_sfnt_off000068a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68A8 18508 bytes
SHA-256: e8f0f552a12aa69e994226cbfb6b4b1f2303cc9b7cfd31b3220157286440ebf7