Malicious PDF — malware analysis report

Static analysis result for SHA-256 981b8516924a71e1…

MALICIOUS

PDF

41.8 KB Created: 2021-05-14 12:08:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f01fd5791e395418107b9950c5a3f4c1 SHA-1: a5bb824feb5981ffab517a1a043ec20a82e49477 SHA-256: 981b8516924a71e1718e146117c080cd2063836afa6535e51382ee4a6a58ce57
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'generators'. The heuristic firings confirm these links point to known malicious redirectors and a lure for game cheats. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or scam attempt, likely delivered as a spearphishing attachment.

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/give-me-robux-now-game-hack In PDF document text
    • http://www.e-lysis.com/images/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/add-robux_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/roblox-robux-generator-tool_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/coin-master-free-spins-and-coins-for-iphone_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/coin-master-400-spin-link-hack_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/download-apps-for-robux_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/free-spin-coin-master-today_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/can-you-earn-robux_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/robux-redeem_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_off000047ac.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47AC 24512 bytes
SHA-256: 0472a800e41128b34537589d356d7fdc9ca50904c602db7c25fb1238ddf8c3e8
font_01_sfnt_off00008033.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8033 18444 bytes
SHA-256: da387504e4ee90144f6399ec13e2f6eb5be90933d390e8f78ca10c807e4b036a

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