Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e52ab7d1d172fb4…

MALICIOUS

PDF

45.8 KB Created: 2021-06-09 05:14:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7bbd35be12b93546b1ac5f4c705e00d0 SHA-1: ab1f6c2f94559e528bf6699690543e26b936061b SHA-256: 9e52ab7d1d172fb4282d0173ec1c1867d64f389f8a5c460b51aea90631837f01
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector infrastructure, disguised as a 'free generator / game hack'. The embedded document body text also contains the same malicious URL, reinforcing the lure. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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/free-robux-no-human-verification-no-lie-game-hack In PDF document text
    • http://pustaka.fti.unand.ac.id/repository/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/free-google-play-promo-codes-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/free-robux-games_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/free-spin-and-coin-blogspot_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/minecraft-linux-free_GM479516143.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/hack-coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/100-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id//repository/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/binextreme-free-robux-pastebin-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/roblox-cheat-engine-download_GM431946152.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/coin-master-game-hack-version-download_GM406889139.pdfIn PDF document text
    • http://pustaka.fti.unand.ac.id/repository/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051c3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51C3 25940 bytes
SHA-256: 5374ddf47dec345df0f298847bcf18b05841b031e10809c2a548ac258c4b2efb
font_01_sfnt_off00008ee7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EE7 18860 bytes
SHA-256: 115849bf27f4a302a259d4e2bb716e84ecc6ef8e7be65b436ef74c4b23ec753e

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