Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a52a612d0fb1f24…

MALICIOUS

PDF

33.7 KB Created: 2021-07-03 12:14:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8b1f0b6746d7b27b7ac67a41c0c4320b SHA-1: 83a7375b8f84c81109092fcd198fff0bb9bfbd79 SHA-256: 2a52a612d0fb1f2454574214cc46ff4ae1bc42205c2cabe80de0978a45749b05
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 trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, likely serving as a gateway to further malicious content or downloads. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a phishing or social engineering attack.

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.tw/app/406889139/how-to-really-hack-coin-master-game-hack In PDF document text
    • http://opac.library.uib.ac.id/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/coin-master-card-hack-apk_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/minecraft-windows-10-free-trial_GM479516143.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/coin-master-hack-tool-for-pc_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/wurst-client-112-2_GM479516143.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/hack-master-coin-pc_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/coin-master-tiradas-gratis_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/conquer-3-money-hack-roblox_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/coin-master-hack-mod-apk-35-8_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://opac.library.uib.ac.id//repository/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/get-2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.library.uib.ac.id/repository/minecraft-hacked-client-18_GM479516143.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_off00002e9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E9A 22460 bytes
SHA-256: f015f2a19f04986d53dcf55741c5b398e47fabb4b6937cda09984b48881c37d8
font_01_sfnt_off00006076.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6076 18424 bytes
SHA-256: b7ec68834e62615229ce2f48e2bd5bfcb058c38ed1b5d390e0fb0719784f367f

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