Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cf567f1806a54f3…

MALICIOUS

PDF

31.4 KB Created: 2021-07-19 07:30:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 800cbc266da7347e31bc0fb7c79c571c SHA-1: f0aa50329d2fadcaace81c0b87c5056f9c653af8 SHA-256: 7cf567f1806a54f31d19f80c4b9f2b4393df2715c736e2d22705b4844dcda11e
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to known malicious infrastructure, specifically advertising free generators for popular games like Coin Master and Roblox. The document body and embedded links strongly suggest a social engineering lure to drive traffic to potentially malicious sites. No scripts were extracted, but the PDF's structure and embedded URLs are indicative of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 3

  • 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.
  • 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/406889139/coin-master-daily-free-spin-app-game-hack In PDF document text
    • http://alroglobal.com/images/robux-hack_GM431946152.pdfIn PDF document text
    • http://alroglobal.com/images/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • http://alroglobal.com/images/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://alroglobal.com/images/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://alroglobal.com/images/free-tiktok-coins_GM835599320.pdfIn PDF document text
    • http://alroglobal.com/images/tiktok-followers-for-free_GM835599320.pdfIn PDF document text
    • http://alroglobal.com/images/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://alroglobal.com/images/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://alroglobal.com/images/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://alroglobal.com/images/free-robux-app_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F5D 23560 bytes
SHA-256: 5b90b80167f1da886e5b96724cada42038f53c45ded9b1601d2245f92ea837c8

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