Malicious PDF — malware analysis report

Static analysis result for SHA-256 70eb77516cd502e8…

MALICIOUS

PDF

42.5 KB Created: 2021-05-14 00:05:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f2dc8478a90166a668508a0fdef0cefe SHA-1: e555b1a7fdcb1866b2a36ddac1de2b43904cb9e2 SHA-256: 70eb77516cd502e8ef31b8ecd95854ec2c773a606ddf4fac3ba0698458716fb0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as generators for in-game currency like Robux. The document body and embedded URLs strongly suggest a lure for users seeking cheats or free items, leading them to potentially malicious sites. No scripts were extracted, but the presence of multiple malicious links indicates a high likelihood of a phishing or scam attempt.

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/431946152/free-robux-generator-no-verification-game-hack In PDF document text
    • http://leigraphics.com/images/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://leigraphics.com/images/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://leigraphics.com/images/arsenal-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://leigraphics.com/images/hack-coin-master-for-android_GM406889139.pdfIn PDF document text
    • http://leigraphics.com/images/oprewards-com-earn_GM431946152.pdfIn PDF document text
    • http://leigraphics.com/images/how-do-i-get-robux_GM431946152.pdfIn PDF document text
    • http://leigraphics.com/images/hack-card-collection-coin-master_GM406889139.pdfIn PDF document text
    • http://leigraphics.com/images/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • http://leigraphics.com/images/free-spins-and-coins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://leigraphics.com/images/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://leigraphics.com/images/robux-gainer_GM431946152.pdfIn PDF document text
    • http://leigraphics.com/images/coin-master-free-spin-whatsapp-group_GM406889139.pdfIn PDF document text
    • http://leigraphics.com/images/how-you-get-robux_GM431946152.pdfIn PDF document text
    • http://leigraphics.com/images/how-to-hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://leigraphics.com/images/coin-master-fan-page-facebook_GM406889139.pdfIn PDF document text
    • http://leigraphics.com/images/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://leigraphics.com/images/free-custom-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://leigraphics.com/images/coin-master-spins-for-free_GM406889139.pdfIn PDF document text
    • http://leigraphics.com/images/how-to-change-your-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://leigraphics.com/images/free-robux-com-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
stream_003_off00004a9d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A9D 24480 bytes
SHA-256: d868808df81231da61f7f2e6debb3dcde673c3f30acd2050206b632d3e22200b
font_01_sfnt_off00008289.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8289 18600 bytes
SHA-256: fd611ad94f1c5362e5936d61a0ca6686a852f181e3b69dadbb107f1a26b259f7

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