Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ec3d3fc5ef58bec…

MALICIOUS

PDF

46.8 KB Created: 2021-06-08 17:13:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 533929fb2791cade5a0c90f42139bf19 SHA-1: 6aaf362ea529d5fe9071fef86979c7216691de60 SHA-256: 2ec3d3fc5ef58bec00b80eca22988feb46633d5d263aece2d7e21e59c0a3e002
160 Risk Score

Malware Insights

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

This PDF document contains multiple links designed to lure users into believing they can obtain game hacks or free currency. The primary link, https://netcdn.tw/app/431946152/how-do-you-hack-roblox-to-get-free-robux-game-hack, is flagged as a malicious redirector. While no scripts were extracted, the document's structure and embedded URLs strongly suggest an attempt to redirect users to malicious sites, likely for further exploitation or phishing. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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 https://netcdn.tw/app/431946152/how-do-you-hack-roblox-to-get-free-robux-game-hack In PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/coin-master-hack-september-2021_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/spins-gratis-coin-master-hoy_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/do-robux-generators-work_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/minecraft-pe-hack-client-2021_GM479516143.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-spin-link-hack_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-game-free-download_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/how-do-you-earn-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-hack-ios-cydia_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/giftrobux-com-generator_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/roblox-redeem-card-codes-free_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005022.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5022 23408 bytes
SHA-256: 5b78644ce966ad71445bfc9731ea883095bfeedaf6a63664c65e20957fe0e492
font_01_sfnt_off000084d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84D7 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off0000917f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x917F 19084 bytes
SHA-256: db2b64aa3b990fe33cb253084bfa15a675a4e5311be3de680e6c7ea21a60c520

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