Malicious PDF — malware analysis report

Static analysis result for SHA-256 48c3648adaa8eca8…

MALICIOUS

PDF

34.5 KB Created: 2021-06-27 00:22:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 940198158f493679f5d853f1edfcc194 SHA-1: 7c7391b6db907d944757e91da6e947c256d2952c SHA-256: 48c3648adaa8eca839a539a20eda0340ee0be60669ab856f905b60503228e228
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for game hacks and free items, directing users to a URL associated with malicious redirectors. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the document's structure and embedded URLs strongly suggest a phishing or scam attempt to redirect 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/cheat-roblox-elemental-wars-game-hack In PDF document text
    • http://lib.stie-aub.ac.id/repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-hack-dot-xyz_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-get-10-million-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/robux-free-com_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-free-spin-whatsapp-group-link_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/top-ten-free-roblox-items-2021_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/numeros-de-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-hack-roblox-parkour_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/how-to-hack-accounts-on-roblox-on-ipad_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/free-robux-without-verification-and-survey_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/spped-hack-2021-october-for-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/rare-account-free-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://lib.stie-aub.ac.id/repository/earn-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA6 22288 bytes
SHA-256: 71f1d349a1b9e9a10afe2737992b64ca027e11affe927fc1e9006bfe3d347a7c
font_01_sfnt_off00006135.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6135 19212 bytes
SHA-256: 49eee1af92698b1565e2d1572808407620b7b85ed5e0fd7e461bf8e184bc1613

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