Malicious PDF — malware analysis report

Static analysis result for SHA-256 b97709f7f83f0b33…

MALICIOUS

PDF

33.6 KB Created: 2021-06-17 19:36:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5f2c1190b3e64e89a2a4a9ebcf23f5ce SHA-1: 91b8564a8bb71a630a09a6e7899b51bbececcca1 SHA-256: b97709f7f83f0b33c1149fd2d8a78915be3bf9632fdbf752e517cd13ea675eb1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising game hacks and generators. The document body and embedded URLs strongly suggest a lure to trick users into visiting these sites, likely to download further malware or engage in scams. The ML classifier also 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-hack-menu-jailbreak-game-hack In PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-change-username-for-free-nanoo_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/cheat-roblox-jailbreak-speed-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/legit-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-hack-any-player-in-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-good-pet-ranch-accounts-free_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-spin-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-free-play_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/sinkable-roblox-hack_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-leaderboard-hack-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/hacks-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-week-old-accounts-roblox_GM431946152.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_off00002f3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F3C 21392 bytes
SHA-256: 09b38150268ef2a6df1f56d373a0430200bd098722bfee67020a1ca72ced1349
font_01_sfnt_off00005dab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DAB 19280 bytes
SHA-256: 84277dfd0d827a5893e9f8dbda32d4d30da00fd001a04833c1a7e7066e86af0b

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