Malicious PDF — malware analysis report

Static analysis result for SHA-256 25d4e0aad66bbe0f…

MALICIOUS

PDF

44.5 KB Created: 2021-05-12 12:11:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 2f5d4919a9c698c1228ec91a039dc824 SHA-1: 43456bc8619f2dfdb658ed38c6a4b779587dc780 SHA-256: 25d4e0aad66bbe0fd9043a2d177b219625d0984d0e5cc0a659746217bfd5a8ba
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, specifically promoting "free Robux" or "game hacks". The document body and embedded URLs suggest a social engineering lure to trick users into visiting potentially harmful websites. While no scripts were extracted, the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of malicious intent, likely to deliver a secondary payload or phish for credentials.

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 https://netcdn.xyz/app/431946152/free-robux-for-free-game-hack In PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/free-realistic-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/coin-master-free-spins-link-download-apk_GM406889139.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/free-coin-master-cards-link_GM406889139.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/robux-free-c_GM431946152.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/free-chest-coin-master_GM406889139.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/free-robux-android_GM431946152.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/hacks-and-cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/how-to-get-a-free-dominus-in-roblox_GM431946152.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/minecraft-story-mode-free-download_GM479516143.pdfIn PDF document text
    • http://pengolahan.perpus.wima.ac.id/repository/archery-master-3d-coins-hack_GM406889139.pdfIn 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
stream_003_off00004a42.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A42 29964 bytes
SHA-256: 4b926e65ef26de5f009917082545a92d24f8eebad341b5d9380b16f5b974a49d
font_01_sfnt_off00008c98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C98 18012 bytes
SHA-256: 3ef9e48aa3d97d4217e004f7625a8cbae9320a74231b80a01553f6433e422360

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