Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bdea5ff8b129d24…

MALICIOUS

PDF

34.3 KB Created: 2021-06-29 20:41:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 7ffceb3d9fc0d31de3e381ad73cfa4fd SHA-1: 48b13e68acdbe1e37adbdd5bdec4bd2849e3f15d SHA-256: 0bdea5ff8b129d2424679d4756954d5bd3eb90ca5634bb2482d0f55abbc156d8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure related to game hacks and redirects to a known malicious URL. The document body and heuristics indicate a deceptive link intended to trick users into visiting potentially harmful content. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or redirection attack.

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/how-to-hack-out-of-bank-roblox-game-hack In PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/haktuts-2021-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-santa-christmas-obby-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/moonactive-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-robux-free-and-easy_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/hack-dungeon-quest-roblox-2021_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/www-roblox-com-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/i-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/minecraft-bedrock-download_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/coin-master-free-gold-cards_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/is-coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-free-draw-2-hack_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/minecraft-kill-aura_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-get-free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-get-free-robux-2021-no-survey_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_off00002f30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F30 22236 bytes
SHA-256: ce7a18afca637237e1de77b8a223f03f24cafd1d63bdad690d93dc5e388f8976
font_01_sfnt_off0000608f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x608F 19064 bytes
SHA-256: 534d3c12f9c2f5e33ad9ad0648e911b71fb884347c04d7de45b38735da4b99cd

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