Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a5b95a96e98a8e2…

MALICIOUS

PDF

42.9 KB Created: 2021-05-14 09:36:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4277772c7177f107a3ff9a9dca0b4c76 SHA-1: 5f7bb7bec945fd67ed7775cdc93ba34b917c3831 SHA-256: 9a5b95a96e98a8e2957fa06d16c4c5ff446b865f7634af73f1513f309cf5ddc0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The primary malicious URL identified is https://netcdn.xyz/app/431946152/free-roblox-accounts-with-robux-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a phishing or scam attempt designed to lead users to potentially harmful sites.

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/free-roblox-accounts-with-robux-game-hack In PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/como-hackear-el-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/free-spins-on-coin-masters_GM406889139.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/free-spins-coinmaster_GM406889139.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/free-roblox-accounts-dantdm_GM431946152.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/spin-rewards-coin-master_GM406889139.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/how-many-free-spin-links-is-there-for-coin-master_GM406889139.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/where-can-i-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/free-spin-coin-master-online_GM406889139.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/coin-master-free-spins-cash_GM406889139.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/easypoints-gg-roblox_GM431946152.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://polycraft.ae/uploaded_files/userfiles/files/master-free-spin-and-coin-links-html-m-1_GM406889139.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_off000049ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49EE 25284 bytes
SHA-256: 2fd692528de248dc2a94add96c9f393f1ac00efa7948eeaa7f3770232a173c5c
font_01_sfnt_off00008442.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8442 18676 bytes
SHA-256: 4ebcf990001f3b6d5b8f187221ce9c528a6bcbfca241b55ad06a715c23028265

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