Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6927c4429708d14…

MALICIOUS

PDF

34.6 KB Created: 2021-07-05 01:15:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 64c162c396b47d48993f81d843e387f3 SHA-1: 1f45b09ee0efaf3442c581aeec595152204daf26 SHA-256: e6927c4429708d14ca5e48be74677fb0c39d1676124c401968d8c9ca3e00e883
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically designed to lure users with promises of free game currency or hacks. The primary redirector URL is http://netcdn.tw/app/431946152/robux-now-game-hack, which is part of a network of similar lures. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate 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.tw/app/431946152/robux-now-game-hack In PDF document text
    • http://fobh.net/userfiles/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/free-robux-groups-in-roblox_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/pubg-uc-kaufen_GM1330123889.pdfIn PDF document text
    • http://fobh.net/userfiles/files/how-to-get-free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/the-community-hacker-roblox_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/how-do-you-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • http://fobh.net/userfiles/files/reddit-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/xray-hack_GM479516143.pdfIn PDF document text
    • http://fobh.net/userfiles/files/minecraft-wurst-client_GM479516143.pdfIn PDF document text
    • http://fobh.net/userfiles/files/how-to-hack-a-roblox-accout_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/coin-master-free-spin-link-today-50_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://fobh.net/userfiles/files/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/village-4-coin-master_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/free-roblox-accounts-with-robux-that-work-2021_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_off00002ec6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EC6 23156 bytes
SHA-256: df4ee8505f8f2c85d140893fcc1ddf7572894e8cdb7bb1591881c43550f0daec
font_01_sfnt_off00006306.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6306 18716 bytes
SHA-256: 03a69881a9817a66c0040c2fae8bf7a58cbd83f3653c163cc6aeb0f94e57dd99

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