Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fb98bef003b9969…

MALICIOUS

PDF

34.7 KB Created: 2021-06-19 05:24:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9daa24132bb83f4b241c983877fa5679 SHA-1: 7109928257c25e376b71a3acbdc957769a746285 SHA-256: 6fb98bef003b9969a150ee145541bde029fd12de4f8cf5b5c3a9bffae7d4083a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links, including one to a known malicious redirector at 'http://netcdn.co/app/431946152/hack-apk-download-roblox-game-hack'. The document body and embedded links suggest a lure for game hacks and generators, aiming to trick users into visiting malicious sites. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of exploitation.

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/hack-apk-download-roblox-game-hack In PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/como-hackear-roblox-apk-mediafire_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/free-robux-codes-2021-pastebin_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/robux-sites_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/coinmaster_GM406889139.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/cheat-robux-roblox-2021_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/roblox-faces-for-free_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/coin-master-hack-fast-org_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/cmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/free-groups-to-join-roblox_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/free-coins-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/minecraft-the-complete-handbook-collection_GM479516143.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/free-roblox-outfits-2021_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_off000031a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31A2 21640 bytes
SHA-256: 22310cd9ad196041ba2d0fca3cad450664097b6772ced9d90bf5ea3e999390f9
font_01_sfnt_off0000614f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x614F 19340 bytes
SHA-256: f161e2a24d677ea2df8f695e333f028df9ef122bac5e2ceb599d608d61578c67

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