Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8910f95edc7a965…

MALICIOUS

PDF

34.1 KB Created: 2021-06-19 04:35:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4237c82de51cc46adf9a30314bbab701 SHA-1: bd952f1787a3f3a5ce3a5a053c1d9bf3a7df0eee SHA-256: d8910f95edc7a965dbdb8f87044ab04496e1ada2f5c993f613447295e04ce6a9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of game hacks and free currency to entice users. It contains multiple links to redirector infrastructure, specifically http://netcdn.co/app/431946152/how-to-hack-jailbreak-roblox-2021-game-hack, which is flagged as malicious. The document's structure and embedded URLs suggest an attempt to lead users to potentially malicious websites for further exploitation or phishing.

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/how-to-hack-jailbreak-roblox-2021-game-hack In PDF document text
    • http://perpus.ar-rum.ac.id/repository/how-to-get-hacked-accounts-back-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/its-free-roblox-meme_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/free-roblox-survival-games_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/free-download-roblox-pc-virson_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/free-limited-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/what-is-the-free-robux-code_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-cheat-thumbnail_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/coin-master-hack-apk-35-13_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/coin-master-hack-online-no-human-verification_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-install-free-download_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/coin-master-hack-club_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/hack-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/robux-cheats-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-phantom-forces-credits-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/coin-master-games-download-free_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/robux-free-promo-codes_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_off00002fa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA0 21544 bytes
SHA-256: aa7f32c44fe68ecadcf19b894d0eb554707c575916158254223f1c350002284c
font_01_sfnt_off00005ecd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ECD 19508 bytes
SHA-256: e0b9943037ddbba7bfc922139eb88946549782590b39d9677fb89b93b22ee94c

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