Malicious PDF — malware analysis report

Static analysis result for SHA-256 16704397b3cfe108…

MALICIOUS

PDF

34.8 KB Created: 2021-06-21 03:59:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: dfb697910c7ce48f4d15900f26ed91ad SHA-1: b21539a665ed6a91de79e9416e9c410ea7daa2cf SHA-256: 16704397b3cfe108c1e76d7529938338277d4a2587f1ff1b914b0caaa3d5d2bd
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 infrastructure, specifically advertising game hacks and cheats. The document body and extracted URLs strongly suggest a social engineering lure to trick users into visiting malicious sites, likely for further malware delivery or credential harvesting. No scripts were extracted, but the PDF structure and embedded URLs are indicative of a phishing or scam 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/hacks-to-get-money-on-roblox-jailbreak-game-hack In PDF document text
    • https://vierabyragazze.com/upload/files/free-spin-and-coin-blogspot_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/roblox-free-name-change_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/do-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/minecraft-toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/roblox-card-hack-2021_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-hack-generator_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/earn-free-robux_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-youtube-tiktok-dance_GM835599320.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/minecraft-pe-hack-client-2021_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-spin-link_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-hack-peoples-account-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/best-free-roblox-excuter-thats-safe_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/oprewards-points-generator_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/tiktok-free-net_GM835599320.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-play-minecraft-with-friends-for-free_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-get-free-promo-codes-in-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_off00002ed6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ED6 22760 bytes
SHA-256: 8667c5c96ae0b141a4de9f83286744b42f129f34e8bfc498e99dc9096a36b1c5
font_01_sfnt_off000061c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C6 19420 bytes
SHA-256: 3092cd29567ef31fe4801d7942991799de1c79c457f3c6ce056044d35aa12a0f

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