Malicious PDF — malware analysis report

Static analysis result for SHA-256 75ee6d06967257d4…

MALICIOUS

PDF

34.0 KB Created: 2021-06-18 11:49:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 61f57b0013e9dfe42bb3887e35506354 SHA-1: fbc8cd6bc898dc5260ff9d1b6f53dd9aa3ca5e25 SHA-256: 75ee6d06967257d443c1e267975d78d85a52e9fb6aef7073445d76143630e48e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.co/app/431946152/blood-and-iron-roblox-hack-game-hack. This redirector is associated with lures for game hacks and generators, suggesting a phishing or scam attempt. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URLs and heuristic firings indicate a malicious redirection 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/blood-and-iron-roblox-hack-game-hack In PDF document text
    • https://yeushuen.com.tw/image/data/files/coin-master-strategy_GM406889139.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/como-hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/free-minecraft-java-edition_GM479516143.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/actual-free-robux_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/roblox-hack-script-ihyper_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/free-roblox-hair-boy_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/minecraft-pe_GM479516143.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/how-to-get-free-spins-on-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/coin-master-online_GM406889139.pdfIn PDF document text
    • https://yeushuen.com.tw/image/data/files/how-to-join-someones-game-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ebc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EBC 22452 bytes
SHA-256: 47ba207455d2833f55e4babdcf851ced1cfc9254e00d5dc2d8579eac272a176c
font_01_sfnt_off000060cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60CD 18644 bytes
SHA-256: 391e73f5bf0a04ef07682ee69272df58976f9ae167787d3d553ecec92edcf56d

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