Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad54fcd8a280bcda…

MALICIOUS

PDF

34.3 KB Created: 2021-06-27 06:05:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 57eebe70ff5096072425643d89096941 SHA-1: 61d0f1c7f9d6dad5742b9fa3c2580548120a9cf1 SHA-256: ad54fcd8a280bcda9a44173575449e866edb301d79fd4079b788f194e12f12f3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.co/app/431946152/hacking-roblox-stat-games-game-hack. The document body and embedded URLs suggest a lure related to game hacks, likely intended to trick users into downloading further malware or visiting malicious sites. No scripts were extracted from this sample.

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/hacking-roblox-stat-games-game-hack In PDF document text
    • http://elibrary.smknesbu.sch.id/repository/rc8-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-15-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/minecraft-svg-images-free_GM479516143.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-granny-hacks_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/robux-800-free_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/being-hacked-in-roblox-tofuu_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/talk-as-someone-roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/insert-gear-roblox-hack_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/hacks-bacon-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/mcpe-master-free-coins_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/robux-hacks-that-actually-work-for-everyone-on-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/fire-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-scr-hack_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/hack-the-coin-master-game_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/hacks-in-thessaloniki-international-airport-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/cheat-engine-roblox-dbor_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-clothes-for-roblox-and-no-survey-or-download_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_off00003020.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3020 21896 bytes
SHA-256: 71dbf791f7c339cfd53e022c3e2b394f689e86d4a08903ef8d95ea880d3f80c2
font_01_sfnt_off00006083.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6083 19140 bytes
SHA-256: b30e38341ac69580d83a0756d45c35fcbf83811e4f954481597aa327cc879f8e

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