Malicious PDF — malware analysis report

Static analysis result for SHA-256 022f314a02fa4cbe…

MALICIOUS

PDF

44.3 KB Created: 2021-05-16 00:42:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8553888ee085fe0e4bb5a76a80ad5395 SHA-1: 16882bb1dc7466f94b2fcedb61074fbd084de3be SHA-256: 022f314a02fa4cbe6f5b1bf10d13cc3576d5f3e1fe332fece73a74325db5f691
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple links to known malicious redirectors, specifically promoting "game hacks" and "free spins" for popular games. The primary lure URL is https://netcdn.xyz/app/406889139/coin-master-free-spin-27-game-hack, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to similar lures and embedded URLs. No scripts were extracted, but the presence of multiple malicious links strongly indicates a phishing or scamming attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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-free-spin-27-game-hack In PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/free-coin-master-stuff_GM406889139.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/2021-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/coin-master-rare-cards-hack_GM406889139.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/free-robux-site_GM431946152.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/coin-master-hack-injection_GM406889139.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/coin-master-mod-apk-free-download-for-android_GM406889139.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/pasos-para-hackear-coins-master_GM406889139.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/roblox-generator_GM431946152.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/minecraft-free_GM479516143.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/earn-robux-com_GM431946152.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/roblox-redeem-robux_GM431946152.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/coin-master-hacks_GM406889139.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • https://www.kontraktorjogjadiy.com/ckfinder/userfiles/files/www-coinmaster-com_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a24.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A24 24140 bytes
SHA-256: 02fe56e459aacaa61df03e9c03e8faaab33bcf0b5d6239d1f9eb3388460477bb
font_01_sfnt_off00008152.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8152 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008b04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B04 18064 bytes
SHA-256: e5d4af430e647cf7cb0e22ed46cbaed1bc4db951ce3e04e592ed76e802cdb32e

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