Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ffdc4765954d595…

MALICIOUS

PDF

34.6 KB Created: 2021-06-29 10:35:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 365efe72804ceb0c797bd70e0a67e34d SHA-1: e61f47536a687969b20084503fcc7ab88fdd21a2 SHA-256: 8ffdc4765954d5957f6095c6634f8d886ed1093ae9ab5a9095753573b956a3ed
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, likely as part of a phishing or scam campaign. The document body and heuristics indicate a lure for free in-game currency, specifically 'Robux', which is a common tactic to trick users into visiting malicious sites. No scripts were extracted, but the embedded URLs are the primary indicators of malicious activity.

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/free-robux-on-computer-app-game-hack In PDF document text
    • http://petrorang.com/admin-panel/products/images/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/how-to-change-your-name-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/coin-master-free-spins-whatsapp-link_GM406889139.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/my-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/carding-for-pubg-uc_GM1330123889.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/coin-master-free-spins-link-31-march-2021_GM406889139.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/coin-master-free-spins-links-2021_GM406889139.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/minecraft-clipart-free_GM479516143.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/free-800-robux_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/free-spins-and-coins-com_GM406889139.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/minecraft-ps3-free-download_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 3

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_off00002f95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F95 22436 bytes
SHA-256: 50bc467a6412dfcc174171a7674cedd0a407b1ebb0edc79ce6ba49175ebbc22a
font_01_sfnt_off000061a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A6 19256 bytes
SHA-256: 0c008f11dacf6825be920f59d961a79ca21f5fe3d75b0fb9c385f42dc54cbcc2

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