Malicious PDF — malware analysis report

Static analysis result for SHA-256 de18267f81029522…

MALICIOUS

PDF

34.1 KB Created: 2021-06-19 15:05:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ae775a64e4d1ef86f692dd9e857b89c0 SHA-1: de11bfac9009b0bb6c186953fa5b2b78b67e0b23 SHA-256: de18267f81029522a43ac73a675e547fd125a20eabd7416ebb6680d2be74509f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a specific external URI pointing to game cheats and hacks, indicating a lure for users to download potentially malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of download-related text further supports a phishing or social engineering attack. Although no scripts were extracted, the document's structure and embedded links suggest it is designed to facilitate the download of a second-stage payload.

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/cheat-roblox-jailbreak-2021-money-game-hack In PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-boombox-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-week-old-accounts-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-free-hate_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-you-own-roblox-card-for-free_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/make-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-hacks-for-gold-cards_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-tuto-robux-no-hack_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-cp_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/robux-free-pw_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/script-to-get-any-ite-in-roblox-catalog-free_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-hack-into-your-own-roblox-account_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-online-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/anti-ban-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coins-master-hack_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/apk-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-roblox-com_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-spins-link-without-human-verification_GM406889139.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_off00002f82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F82 21132 bytes
SHA-256: 15d4735ba96640411ef88175d70606aa8e93ff3457ea0d37524383112e1d23cd
font_01_sfnt_off00005d8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D8B 19988 bytes
SHA-256: c7e9a5de519224af884dbfed17a466a1f5d01fea37ade7e698d51b1cc111d2f8

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