Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d5fe5a9e1a3d7cf…

MALICIOUS

PDF

33.3 KB Created: 2021-06-20 13:00:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6b9e1f7cad2476aaf4de270e5f5d1f6c SHA-1: bf4e574a13d4e962020dc680defc1c8d60aae2a5 SHA-256: 8d5fe5a9e1a3d7cf82075ecb43d16f13375c5276549d5925e6482263bfd981b7
160 Risk Score

Malware Insights

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

This PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free virtual currency. The heuristic firings indicate that the document is designed to redirect users to potentially harmful websites. While no scripts were explicitly extracted, the nature of the links and the lure suggest a phishing or malware distribution attempt.

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.co/app/431946152/best-free-roblox-clothes-game-hack In PDF document text
    • http://perpus.masda.ac.id/repository/easy-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-roblox-groups-with-funds_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/como-recuperar-tu-cuenta-hackeada-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/real-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-sign-up-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/become-roblox-admin-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-robux-by-joining-a-group_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-roblox-games-for-girls_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coinmaster_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/hack-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-cards_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/pastebincome-robux-hack_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/give-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/optifine-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-hack-blog_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-hack-tool-exe_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/ac-market-coin-master-hack_GM406889139.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_off00002c2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C2D 22192 bytes
SHA-256: 89514bc2904d97a36f510a9b1041276f5f0e3ee5b3531f07f2623ac5e587050c
font_01_sfnt_off00005d82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D82 18920 bytes
SHA-256: 33b0bc1c2f946e5f14616ec2dc1da463123dbfbba8afed6326b20bc245f5beb5

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