Malicious PDF — malware analysis report

Static analysis result for SHA-256 f58f94ce8affdae4…

MALICIOUS

PDF

47.8 KB Created: 2021-05-12 20:35:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d781fbcfd0021b82909b801360d1e72c SHA-1: e7681e74569a0e9a24ffa80b3c9562bd78edb068 SHA-256: f58f94ce8affdae496ccea10bef8a9540fed42df046d848d74a56f8adf0cf197
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, specifically advertising 'game hacks' and 'robux generators'. The heuristic firings confirm these links are intended to lure users to potentially malicious content. While no scripts were explicitly extracted, the nature of the embedded URLs and the lure suggest a phishing or social engineering attack aiming to redirect users to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/431946152/microsoft-rewards-robux-game-hack In PDF document text
    • https://ambarevleri.com/images/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • https://ambarevleri.com/images/rbx-com_GM431946152.pdfIn PDF document text
    • https://ambarevleri.com/images/free-robux-com_GM431946152.pdfIn PDF document text
    • https://ambarevleri.com/images/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • https://ambarevleri.com/images/how-to-hack-coin-master-computer_GM406889139.pdfIn PDF document text
    • https://ambarevleri.com/images/info-roblox-com-robux_GM431946152.pdfIn PDF document text
    • https://ambarevleri.com/images/coin-master-free-spins-2021-today_GM406889139.pdfIn PDF document text
    • https://ambarevleri.com/images/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • https://ambarevleri.com/images/coin-master-free-coins-app_GM406889139.pdfIn PDF document text
    • https://ambarevleri.com/images/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • https://ambarevleri.com/images/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • https://ambarevleri.com/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://ambarevleri.com/images/robux-generator-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://ambarevleri.com/images/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://ambarevleri.com/images/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://ambarevleri.com/images/what-is-robux_GM431946152.pdfIn PDF document text
    • https://ambarevleri.com/images/coin-master-hack-mod-apk-android-1_GM406889139.pdfIn PDF document text
    • https://ambarevleri.com/images/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://ambarevleri.com/images/minecraft-mod-updater_GM479516143.pdfIn PDF document text
    • https://ambarevleri.com/images/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A89 27220 bytes
SHA-256: ee8a74d70ba4052cd666352ba1ad4533e9c55baf2c1d94c99d0a92af7794d89d
font_01_sfnt_off000089e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89E5 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off0000968d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x968D 18836 bytes
SHA-256: d76d5b6db0d4e4705444aa8851d1d4c6cd7560e5eeba0f606c105a883c005607

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