Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d08c82fa7881a1e…

MALICIOUS

PDF

34.2 KB Created: 2021-06-30 01:43:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b547f8be134395583acc56c5a60e5ff2 SHA-1: 145a9a324eac4e870128d2de4914ec1bb652ed48 SHA-256: 9d08c82fa7881a1e9963d4c23d0fec826f953685417bd36620903a9e645dae88
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to Roblox hacks and free Robux, a common social engineering tactic. It contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.co/app/431946152/roblox-follower-hack-2021-game-hack. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. No scripts were extracted, but the document's structure and embedded links strongly suggest a phishing or malware distribution attempt.

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-follower-hack-2021-game-hack In PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-robux-cpdes_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/best-free-stuff-in-the-roblox-catalog_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/is-there-any-way-to-gte-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/hiw-to-hack-miscreated-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/hack-para-atravesar-paredes-en-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/da-hood-speed-hacks-roblox-exploit_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/get-free-robux-robloxcom_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/hack-compt-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/lua-injector-script-for-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/roblox-hack-para-jailbreak_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-robux-gamekit_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/how-to-get-a-free-pet-in-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/free-robux-for-playing-games_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/roblox-free-shirts-xxtentacion_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/hack-roblox-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/imperium-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/bloxburg-us-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/rocash-com-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fkg.unand.ac.id/repository/roblox-free-exploit-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_off00002e0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E0A 22340 bytes
SHA-256: 980fa9fcfe763b43152874815e96cc1774b59f7d055efcea63a4e3b2be39d5b1
font_01_sfnt_off00005f8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F8C 19384 bytes
SHA-256: 0353cf4ef8a2d15b2e0c7a194565ad0168435baa81c0a5daec9751cc07931312

Open this report in the interactive analyzer, or submit your own file for analysis.