Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3acc889a0b26249…

MALICIOUS

PDF

47.6 KB Created: 2021-06-03 23:39:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f7e0557ebaa8f3ac1bf03f75c7e75f59 SHA-1: b3115d47d64cdc597626adb0a6d40cd423722f4a SHA-256: c3acc889a0b2624908a08302904d78aca4e28de44540e43feb94d3091184f4e2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links that redirect to a known malicious domain, masquerading as a generator or hack for popular games. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, contains references to game-related terms and the malicious URL, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.online/app/406889139/master-free-spin-and-coin-link-game-hack In PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-gifts-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/roblox-rules_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/how-to-make-roblox-clothes-for-free_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-free-download-for-pc_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/tiktok-free-trial-likes_GM835599320.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/mcpe-master-free-coins_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/mcpe_GM479516143.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/get-free-cards-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-daily-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/blogspot-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000534c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x534C 24476 bytes
SHA-256: 03b957f870df1c01dfdeb25267b5982ea98caf8163ccf677e186c8172808faf5
font_01_sfnt_off00008ae3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE3 3560 bytes
SHA-256: 9d03f7c6c62ba3e7fdc0441e9d982a863b2b60b781165d6920512f68ecc4a440
font_02_sfnt_off00009769.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9769 18228 bytes
SHA-256: 4b57acba41aa68bb280b2f656de6400654b723400b96e238fbc94aea55036d0e

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