Malicious PDF — malware analysis report

Static analysis result for SHA-256 e09f5d4872d01d6b…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 12:27:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a9cec83bafae71e4d19c8b3ee41932f1 SHA-1: 911c6261c42e86819dd9e403e036897064ad1b68 SHA-256: e09f5d4872d01d6b9c8aa62e9332412926b31196166744d4cf28b7697c2b9efe
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains text and an embedded URI that promote a "Coin Master Hack 2021 Without Verification". The primary URI points to a suspicious domain that likely hosts a malicious application. The ML classifier also flagged this PDF with high confidence, indicating malicious intent. No scripts were extracted, but the overall pattern suggests a phishing lure for a game hack.

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-2021-without-verification-game-hack In PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/mobile-hack-net-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/hackaron-roblox-hack-free-robux-tickets_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/how-to-get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-free-items_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free4mobile24-roblox-hack_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/easy-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-hair-roblox-boy_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-hack-2021-get-free-robux-for-android-and-ios_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-robux-no-download_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/promo-code-roblox-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/beta-warships-roblox-hack_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-hack-on-paint-and-guess-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-hack-apk-33-download_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/coin-master-hack-apk-app_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-In 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_off000030fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30FC 22496 bytes
SHA-256: f5e41bba20a37ca6a8c11c8347f3beab2b20d4d543d9593eb939680868971537
font_01_sfnt_off0000631a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x631A 19044 bytes
SHA-256: 52d7970975dbb598a786e40d700a78de5bb38af7462f02b60e72eba81c32d00d

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