Malicious PDF — malware analysis report

Static analysis result for SHA-256 98a1a2d1560a7c40…

MALICIOUS

PDF

34.4 KB Created: 2021-06-30 14:22:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d82d7552c91a1c5fe06350c8bf253e40 SHA-1: 4eac0a713d87553e816d9f629db0f93425eadb52 SHA-256: 98a1a2d1560a7c4028399eccc3e78208c07163ab3b7b96c354a2b58569aefcd8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of game hacks and free currency to entice users. It contains a critical link to a known malicious redirector infrastructure, http://netcdn.co/app/431946152/join-any-roblox-server-hack-game-hack, which likely serves as a gateway to further malicious content or downloads. The ML classifier also strongly 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/join-any-roblox-server-hack-game-hack In PDF document text
    • https://www.repository.ptiq.ac.id/repository/how-to-get-free-gamepasses-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/can-you-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/e-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/ideos-para-hackear-roblox_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/how-to-make-free-shirts-roblox_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/unlimited-robux-cheat_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/coin-master-free-spins-link-may-2021_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/lootbux-free-robux_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/robux-hacks-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/ulgames-resources-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/minecraft-handbook_GM479516143.pdfIn PDF document text
    • https://www.repository.ptiq.ac.id/repository/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D99 22836 bytes
SHA-256: 3b98726a377bf9a7be42c674bba9eaf6b55c30b08f8055808ddb347b297098ed
font_01_sfnt_off000060ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60AC 19236 bytes
SHA-256: 823dd85c2fdbecc8d472a44e5b4a93d9c6488b148e2aeb459eb0bf3a6a8a4193

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