Malicious PDF — malware analysis report

Static analysis result for SHA-256 2717b4133a48bcc0…

MALICIOUS

PDF

44.2 KB Created: 2021-06-03 05:52:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 19bd90027d3643cc390e640b117aa52d SHA-1: 31d8f2b33fceb477b284019c8c6ee73f4a430951 SHA-256: 2717b4133a48bcc0ec4a408024e47e5e10033fef6c422de0af8eee5f0933373b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a website offering a 'game hack'. The ML classifier strongly flagged this PDF as malicious, and multiple heuristics indicate it's a redirector lure. The document body, though partially garbled, contains text related to game hacks and the malicious URL, suggesting a social engineering attempt to trick users into visiting a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/479516143/minecraft-diamond-finder-hack-game-hack In PDF document text
    • https://opac.umrah.ac.id/repository/static-moonactive_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/pubg-uc-no-verification_GM1330123889.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/spin-rewards-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-roblox-premium_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/wurst-18_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/claim-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/robux-today_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/easy-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-links-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-tiktok-fans-and-likes_GM835599320.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/card-hack-in-coin-master_GM406889139.pdfIn PDF document text
    • https://sigmaclient.info#2In PDF document text
    • https://flux.today#3In 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
stream_004_off0000519b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x519B 24912 bytes
SHA-256: b37fa41d5ea15ab8cfbaaddd4263dd7b4bd5b3cd1560e3505213f45c71e3dee3
font_01_sfnt_off000089eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89EB 18484 bytes
SHA-256: 265962787b73e694aac7c67ed987488fc8d8021a4c66c1127c37ccae154b779c

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