Malicious PDF — malware analysis report

Static analysis result for SHA-256 2135f096d1a3d53c…

MALICIOUS

PDF

47.5 KB Created: 2021-06-03 14:09:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3bab4646387b82b76ad76c3a4bb716d3 SHA-1: 4a394050748e779eddf2ee29a05f22ce5463e200 SHA-256: 2135f096d1a3d53c126c89744b8ad47f557dea25b52fddc02422a325bdc30882
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, leading to a "game hack" lure. The document body and embedded links suggest a phishing attempt to trick users into visiting potentially harmful websites. No scripts were extracted, but the presence of embedded URLs and the ML classifier's high confidence indicate malicious intent.

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/431946152/robux-today-game-hack In PDF document text
    • https://lib.unitri.ac.id/repository/mcpe-master-hack-unlimited-coins-latest-version_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/roblox-com-www_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/freespins-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-spin-links-coin-master-october-30-2021_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/static-moonactive_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/freespinandcoin_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/free-shirt-templates-roblox_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/ro-ghoul-script_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/download-coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-roblox-tablet_GM431946152.pdfIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004f1d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F1D 26592 bytes
SHA-256: 20c8b6880308950f6576d91af739c902af39bd5392da2cbbebce826b0afcbb67
font_01_sfnt_off00008c6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C6A 2880 bytes
SHA-256: a2abb16672545dc40f4313872ce9cfa8d16eaf92960bd568423d37121421eaee
font_02_sfnt_off00009657.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9657 18432 bytes
SHA-256: 959daec5ee9bc3c71d76c0b44e5e7b2fade628e041cf04f050b5917282f814df

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