Malicious PDF — malware analysis report

Static analysis result for SHA-256 b422ae7d3ae4d555…

MALICIOUS

PDF

33.0 KB Created: 2021-07-06 05:18:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e3e97ff91999aa52825ab390c1a2fa33 SHA-1: a51a0a5e6ccd302e09ae8b44554b48d9c8f9ec8f SHA-256: b422ae7d3ae4d555d7825dc2b18a40488cb8dc68917b3792a24b39e753cd8f62
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and generators, specifically for Roblox, to entice users to click on embedded links. The primary link, http://netcdn.tw/app/431946152/getrobux-now-game-hack, is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a potential for further malicious activity, such as downloading additional payloads or leading to phishing sites.

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.tw/app/431946152/getrobux-now-game-hack In PDF document text
    • https://lib.unitri.ac.id/repository/hacks-for-sale-in-roblox_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/dinosaur-simulator-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-free-spins-and-coins-today_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-exploit-lvl-7-roblox_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-robux-gift-card-numbers_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-get-free-robux-on-roblox-without-you-email_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/coin-master-heaven_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/working-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/pokemon-go-free-vpn-android_GM1094591345.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/how-to-get-to-village-3-in-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/best-free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id//repository/free-coin-master-links_GM406889139.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-put-hacks-in-roblox_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/how-to-get-free-robux-no-verification-or-download_GM431946152.pdfIn PDF document text
    • https://lib.unitri.ac.id/repository/http-roblox-hack-mobilegenerator-net_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_off00002c05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C05 21848 bytes
SHA-256: 909f4b23f30eda32c8824ff1fb170bc8c1d4a9d43030c2b9c2f2cc9447200a34
font_01_sfnt_off00005c18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C18 18820 bytes
SHA-256: c947a45b753295a0739f9e073ebb3c99c504f2b62c282b6d89e2fd1f09780d18

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