Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b1fefe862ddf5dd…

MALICIOUS

PDF

34.2 KB Created: 2021-06-25 23:02:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 12fbb903ce87ca13fb06da07b6286d31 SHA-1: ad88c7adb4f6696469b277dc440e20970da74eeb SHA-256: 3b1fefe862ddf5ddf75e77e981c2158a665ecfd8ddf95ae9fcce941f9dab0447
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are flagged as malicious redirectors, leading to websites promising game hacks and free currency for popular games like Roblox and Coin Master. The document body and embedded links suggest a lure for users seeking cheats or exploits, which is a common tactic for distributing malware or conducting phishing. The presence of multiple redirector links indicates a strong intent to direct users to potentially harmful content.

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.co/app/431946152/roblox-skins-free-download-free-game-hack In PDF document text
    • http://digilibfisip.unla.ac.id/repository/robux-hack-download-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/cmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-premium-free_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-admin-games-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-do-you-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-get-free-items-in-the-roblox-catalog-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-hack-any-game-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/withdraw-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-hack-version-download-ios_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-no-download-app-but-play-for-free_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-site_GM431946152.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
font_00_sfnt_off000030b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30B3 21416 bytes
SHA-256: c7cc4a45af04073886b5312b631d687b2a4fe9f41345d73d9f5cf9ceda6c18bd
font_01_sfnt_off00005f7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7E 19444 bytes
SHA-256: eb8dba38386dca64fe1e5baaf3d37fa6f7eeeb3b0556858dc39185ebece633c4

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