Malicious PDF — malware analysis report

Static analysis result for SHA-256 560481a367b6b051…

MALICIOUS

PDF

35.5 KB Created: 2021-07-04 05:33:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: dec1d6e92fac5f9a574955e56df0d182 SHA-1: d4ab96bf1014142a9700459cceaf9c2ed1ef4f99 SHA-256: 560481a367b6b0515be85e599396a3a08950480ea026c284a0f74739b63d284a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors and other PDF files, all masquerading as game hacks or cheats. The primary lure is 'Free Coin And Spin In Coin Master' pointing to http://netcdn.tw/app/406889139/free-coin-and-spin-in-coin-master-game-hack, which is flagged as a malicious redirector. The document body and embedded URLs suggest a social engineering tactic to trick users into downloading further malicious content.

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.tw/app/406889139/free-coin-and-spin-in-coin-master-game-hack In PDF document text
    • https://topkoreamart.com/public/upload/files/roblox-pc-hack-download_GM431946152.pdfIn PDF document text
    • https://topkoreamart.com/public/upload/files/hack-client_GM479516143.pdfIn PDF document text
    • https://topkoreamart.com/public/upload/files/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • https://topkoreamart.com/public/upload/files/bloxburd-free-robux_GM431946152.pdfIn PDF document text
    • https://topkoreamart.com/public/upload/files/easy-way-to-get-robux_GM431946152.pdfIn PDF document text
    • https://topkoreamart.com/public/upload/files/how-to-get-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://topkoreamart.com/public/upload/files/roblox-inspect-element-hack_GM431946152.pdfIn PDF document text
    • https://topkoreamart.com/public/upload/files/free-script-executor-for-roblox_GM431946152.pdfIn PDF document text
    • https://topkoreamart.com/public/upload/files/free-roblox-templates_GM431946152.pdfIn PDF document text
    • https://topkoreamart.com/public/upload/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://topkoreamart.com/public/upload/files/roblox-hack-jailbreak-download_GM431946152.pdfIn PDF document text
    • https://topkoreamart.com/public/upload/files/comment-cheat-sur-le-jeux-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • https://topkoreamart.com/public/upload/files/coin-master-free-spin-no-offers_GM406889139.pdfIn PDF document text
    • https://topkoreamart.com/public/upload/files/minecraft-free-download-mac-full-version_GM479516143.pdfIn PDF document text
    • https://topkoreamart.com/public/upload/files/blox-land-robux-free_GM431946152.pdfIn PDF document text
    • https://topkoreamart.com/public/upload/files/robux-hack-no-human-verification-2021-or-survey_GM431946152.pdfIn PDF document text
    • https://topkoreamart.com/public/upload/files/free-glitches-roblox_GM431946152.pdfIn PDF document text
    • https://topkoreamart.com/public/upload/files/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • https://topkoreamart.com/public/upload/files/hack-para-atravesar-paredes-en-roblox-2021_GM431946152.pdfIn PDF document text
    • https://topkoreamart.com/public/upload/files/coin-master-game-hack-online_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_off0000349e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x349E 22868 bytes
SHA-256: 1203617e7ebb521591e4382e164a898e78b13b5321b5b26b07b1cb435d713b75
font_01_sfnt_off00006824.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6824 18348 bytes
SHA-256: 6eeec23f3dc1a8fda715f091be12cf507421137203139fa633fe014a904a42c4

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