Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5aa9be1047a2dc2…

MALICIOUS

PDF

42.1 KB Created: 2021-05-10 18:47:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d90d54e025586e401041f07438c295d1 SHA-1: a5c669734e52690ccb9409c2dca98110668ded7d SHA-256: e5aa9be1047a2dc27d0ab923c1e91d1c6f0b180ee7d65a8de958faf794191719
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple embedded URLs that lead to redirectors and other PDF files, all promoting game hacks and cheats. The heuristic firings indicate that these links point to known malicious redirector infrastructure. While no scripts were explicitly extracted, the nature of the lures and the embedded URLs suggest a phishing or social engineering attack aimed at tricking users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/real-coin-master-hack-2021-game-hack In PDF document text
    • https://fib.ub.ac.id/sac/repository/arsenal-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-free-box_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-robux-just-click_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-roblox-characters_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/www-roblox-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/robux-redeem_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/minecraft-pocket-edition-free-apk_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/robux-for-surveys_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/hack-coin-master-32-mod-apk_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/what-are-points-for-in-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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_003_off00004a13.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A13 24844 bytes
SHA-256: d8921381ac542cfd788bcfc774cc388071149411e5efe41e40a3c300dadeb96a
font_01_sfnt_off00008249.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8249 18192 bytes
SHA-256: b4c41a46567064d4197865bd819757eb36d0b1d423a991f81f4246b2a9d75138

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