Malicious PDF — malware analysis report

Static analysis result for SHA-256 65f8efd90aa75f1c…

MALICIOUS

PDF

42.7 KB Created: 2021-05-18 01:01:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d73d857c88ae13e204369722d6fe9f81 SHA-1: 7d4c163323e606205cfc022ce0bb7badad248707 SHA-256: 65f8efd90aa75f1c67597df6e8c64d3908a720b430253efef60b0c68357b9ae1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector infrastructure, specifically advertising 'game hacks' and 'free coins' to lure users. The primary redirector URL, https://netcdn.xyz/app/406889139/coin-master-hack-app-2021-game-hack, is associated with malicious activity. The document body and embedded URLs suggest a phishing or scam attempt to drive traffic to potentially malicious 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/406889139/coin-master-hack-app-2021-game-hack In PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-robux-site_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/roblox-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/flip-master-free-coins_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/coin-master-free-spins-may-11-2021_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/coin-master-attack-block-hack_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/coin-master-free-spins-fb_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/20-free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/claimrobux-net_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/roblox-bux-free_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/coin-master-hack-using-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/inappropriate-roblox-games_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/coin-master-free-spins-daily-link-game-mod_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/robux-giver_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-coin-master-gift-link_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
stream_003_off00004d2b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D2B 24576 bytes
SHA-256: 52beada15ab6fff7b99e7a1c18ebb041fd016a9fba83c47fe6602decf1b18651
font_01_sfnt_off00008458.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8458 18296 bytes
SHA-256: bf349ca5353405da50dde13ab4b8c776ba4b0a629ab8eb4a4600605684f4a994