Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a8a3368de25fe64…

MALICIOUS

PDF

54.6 KB Created: 2021-06-04 03:09:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cd991018dd6053d90cb77e2d0523b307 SHA-1: 29b1ac216e9ec80d1a6e59879955f2794bebebdd SHA-256: 8a8a3368de25fe643966d0177f2eaae490d6bdb54564e420ea03580dcfe77e36
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The primary lure appears to be related to Minecraft and Coin Master. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a social engineering attack designed to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9497

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/479516143/minecraft-pocket-edition-free-apk-game-hack In PDF document text
    • http://library.stieyapan.ac.id//repository/is-minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/card-hack-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-free-spins-moonactive_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-free-spin-link-today-16-11-2021_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-working-hack_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/tiktok-free-10-followers_GM835599320.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-hack-355_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-roblox-followers-generator-2021_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/minecraft-free-download-2021_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/minecraft-pe-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-daily-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/how-to-get-free-spins-on-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/tiktok-fans-free_GM835599320.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/games-in-roblox-that-give-you-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-hack-game-download-ios_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000544c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x544C 23968 bytes
SHA-256: 8f4536f185c8ea4cfa5950cc10c11b4c9d78b412765e80f53327ef25bec85a2c
font_01_sfnt_off00008ac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AC2 7936 bytes
SHA-256: 038829bc81e15b6024d2a75b24b2b95e916dd2d8797e4f87b867de59d61698ef
font_02_sfnt_off0000a3ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3EC 4232 bytes
SHA-256: ab6320ab342704d2c5943abfba82ed4837bf2da871c91621741fd4cfd15c6ed5
font_03_sfnt_off0000b278.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB278 18384 bytes
SHA-256: d3d1d430428c73896de9795e5eeef6e82810e36860bb7f8fcd97e9577ce89645

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