Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb4c4c4022e3ae07…

MALICIOUS

PDF

35.2 KB Created: 2021-06-19 04:26:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7b06dc47904bb22e5ffe8851b8834546 SHA-1: e2bf50fb94c165d2fa9961fdf7b163d2bd0018f5 SHA-256: bb4c4c4022e3ae07b040792f41b0b7e757710d9f128c4399a22682d60ef2fd12
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to a known malicious redirector, disguised as a generator for free game currency. The heuristic firings confirm the presence of a malicious redirector and a lure for game hacks. The document body and embedded URLs reinforce this lure, aiming to trick users into visiting the malicious site.

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/free-robux-codes-generator-2021-july-game-hack In PDF document text
    • https://ethraa.ae/userfiles/files/gold-cards-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/coin-master-instagram-free-spins_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/100-free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/how-to-hack-a-minecraft-account_GM479516143.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/moonactive-free-spins_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/when-pubg-uc-available_GM1330123889.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/coin-master-hack-generator_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/how-to-change-your-username-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/chisel-and-bits-mod-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/is-minecraft-free-on-pc_GM479516143.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/coin-master-free-pin_GM406889139.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/roblox-executor-free_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/roblox-games-free_GM431946152.pdfIn PDF document text
    • https://ethraa.ae/userfiles/files/can-you-get-free-robux-on-roblox_GM431946152.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_off00002fbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FBF 22524 bytes
SHA-256: 25d7867843a7df730c0e72156870f489977cb438acbab1b0f1e1366b2314298a
font_01_sfnt_off0000622d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x622D 19816 bytes
SHA-256: d5151b9600293b036584d629d5f81c2bce2a8ccbb5b8d3277b10b7a580e13235

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