Malicious PDF — malware analysis report

Static analysis result for SHA-256 89c8481996a9dd00…

MALICIOUS

PDF

46.7 KB Created: 2021-06-08 23:46:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 326489dab93f9090488f7399eb763251 SHA-1: 6a2cf5a85de07f96ebed611fa38140d1c7b3966b SHA-256: 89c8481996a9dd002aef15255aaea18bf267dc5578c91280567a08794d9c6f12
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a redirector disguised as a game hack generator, which is a common lure for phishing or malware distribution. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to malicious content, likely for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.tw/app/431946152/how-to-download-roblox-jailbreak-hack-cranberry-game-hack In PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-card-collection-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/card-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-hacks-android_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/roblox-money-hack-reddit_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/minecraft-free-install_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-spin-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-free-coins-and-spins-group_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/pig-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/i-got-hacked-what-do-i-do-roblox_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/free-minecraft-skins-ps4_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/make-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/is-roblox-hacked_GM431946152.pdfIn PDF document text
    • https://Buy.HoaxMC.comIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004eaf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EAF 29632 bytes
SHA-256: f512a9e9aacdf736f72ebf9c421e647c6054ab3b31a4e4f7e580905df9527c78
font_01_sfnt_off0000914c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x914C 19156 bytes
SHA-256: 00a8533e09ceb31a609aa53c54a07402969548bffb5368a6917c2d59e52a5d02

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