Malicious PDF — malware analysis report

Static analysis result for SHA-256 93b5043fba43464e…

MALICIOUS

PDF

47.1 KB Created: 2021-05-11 02:01:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 762e7e5193759d423c8acd1c6c8c8e49 SHA-1: 30feeeacc37a5e543113cf9eeaaa684312c4849a SHA-256: 93b5043fba43464e526a325d7fcfca45d29ed428f5fbd5ea6b0ce9a7aaecf159
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into clicking on what appear to be game hack or generator sites. One primary URL, https://netcdn.xyz/app/431946152/how-to-get-free-robux-without-doing-anything-2021-game-hack, is identified as a malicious redirector. The document body and embedded links suggest a social engineering pretext related to obtaining free in-game currency. No scripts were extracted, but the presence of malicious redirectors and the lure content strongly indicate a malicious intent to lead the user to a harmful destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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.xyz/app/431946152/how-to-get-free-robux-without-doing-anything-2021-game-hack In PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/robux-gratis_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/how-to-get-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/coin-master-mod-apk-2021_GM406889139.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/free-minecraft-texture-packs-java_GM479516143.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/free-roblox-hair-girl_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/com-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/facebook-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/coin-master-hack-apk-35-11_GM406889139.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/coin-master-hack-app-ios-download_GM406889139.pdfIn PDF document text
    • https://elibrary.stp-aviasi.ac.id/repository/minecraft-bedrock-edition-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
stream_003_off000049d6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49D6 25116 bytes
SHA-256: e5c1aef44102cb82cb7c5c2ce5cdaa6328cebeae4e29013ceb1e5c68cb496214
font_01_sfnt_off00008423.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8423 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off000090ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90CA 19804 bytes
SHA-256: 7de61e10f8b36a8651a25a8843179e8b1ecc4bebcf46d2f81f98618caa29dc1a

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