Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d8b8df7237e32d9…

MALICIOUS

PDF

34.7 KB Created: 2021-06-26 15:37:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: efe638cbad568facc59b1fbe96be6c57 SHA-1: ac9f1e74e18d3bd2cf8da0fcd9a892b190df9990 SHA-256: 8d8b8df7237e32d99cd5c1b6340e569e47e90f3433fb6e7a81b43c737c681e0b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on promises of free in-game currency or exploits. The primary link, http://netcdn.co/app/431946152/roblox-level-7-free-exploit-game-hack, is identified as a malicious redirector. The document body and embedded URLs strongly suggest a social engineering tactic to drive traffic to potentially malicious sites, likely for credential harvesting or malware distribution.

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-level-7-free-exploit-game-hack In PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/roblox-hack-init-roblox-hack-addrobux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/free-robux-dispenser_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/actual-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/withdraw-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-link-haktuts_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/seiten-zum-robux-hacken_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/hackear-coin-master-sin-verificacion_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/how-to-walk-through-walls-roblox-2021-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/coin-master-hacks-for-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/free-spins-on-coin-masters_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/free-executor-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/coin-master-daily-free-cards_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/free-unlimited-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1lahat.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-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_off00002f6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F6F 22548 bytes
SHA-256: 59fe9f5fcee66acff5bd05f5327809ebcb33f863e8dc5211ddd5ce51f73a241f
font_01_sfnt_off000061ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61EC 19220 bytes
SHA-256: 28c257149410d872a30fe138042ecc7a36e44db8078dffa5b6df27a062d02c9d

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