Malicious PDF — malware analysis report

Static analysis result for SHA-256 97f68c0e9fdfbec7…

MALICIOUS

PDF

34.4 KB Created: 2021-06-26 07:28:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 47ebba6eaefd723e9d72acae45636534 SHA-1: d3c0d7ca11c1cd4b1748b4997216e2ee69c5290f SHA-256: 97f68c0e9fdfbec7bbeb03420afd9342e2529fcf4347c09d1b9bafeda6aa243d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector pointing to 'http://netcdn.co/app/431946152/roblox-coolkid-hacker-game-hack'. This lure, combined with heuristics indicating a game hack or free generator theme, suggests a phishing or social engineering attack. The ML classifier also strongly flagged this PDF as malicious.

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/roblox-coolkid-hacker-game-hack In PDF document text
    • http://perpus.masda.ac.id/repository/free-magical-chest-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/robux-hack-today_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/pubg-uc-20210_GM1330123889.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-prison-speed-hack-download_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-hack-ios-without-verification_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-hack-online-no-human-verification_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-things-on-roblox-without-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/are-there-any-coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-promo-codes-2021-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/robux-free-gift_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-giveaway-january-2021-9_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-hack-ios-no-verification_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-hack-cheat-generator-d_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-pe-free-download-android_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-free-hack-download_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-survival-hacks_GM479516143.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_off00003074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3074 22260 bytes
SHA-256: 0a66520c067b5a333c1ada4305f47dd1ea5e1745eed8bf3aaf03e74dd52b70d1
font_01_sfnt_off000061cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61CC 18952 bytes
SHA-256: 171d3aa35d0fbb288b2a3f2fd68e6604e53b34a05cd24d37a845445f85c8ee52

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