Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebb5819d5dc9694b…

MALICIOUS

PDF

43.3 KB Created: 2021-05-15 11:07:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 045beaeebd3f8248080c061f6c314f84 SHA-1: 724b279d783c3a97696585a649813cabdb756b61 SHA-256: ebb5819d5dc9694b305fc94e4abcf4892740da9cd34d63175f8110c62cb6e360
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of 'game hacks' to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which in turn hosts other malicious PDF files. The document body, though heavily obfuscated, contains references to game hacks and URLs, reinforcing the lure. The presence of multiple malicious links and the use of redirectors indicate a clear intent to deliver further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/hack-coin-master-2021-game-hack In PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/hack-the-game-coin-master_GM406889139.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/a-lot-of-robux_GM431946152.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/pig-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/roblox-assassin_GM431946152.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/free-attacks-on-coin-master_GM406889139.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/minecraft-pocket-edition-apk-free-download_GM479516143.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/blogspot-coin-master_GM406889139.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/free-spin-app-coin-master_GM406889139.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/roblox-bux-free_GM431946152.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/easiest-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://teknikkaryamandiri.com/ckfinder/userfiles/files/coin-master-hack-apk-2021_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_off00004cbd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CBD 25416 bytes
SHA-256: b98dc95ba4be53b421cf84f07886988b50e8d58506b68484379df579d2daa944
font_01_sfnt_off00008725.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8725 18116 bytes
SHA-256: a3df71077179c7440b1e4836f0868e786a4fbdd8e53d65e7c5dca2578e10a822

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