Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9510e8552250084…

MALICIOUS

PDF

43.8 KB Created: 2021-05-18 02:06:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: fb7effbca7c99e698559ffbe63047e69 SHA-1: 432c50da77d52cbcf16e53d1721d04d2a4d259b7 SHA-256: f9510e855225008429b9b1873952942f62152b53658f19f4f8fa73f35e9236c9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-heaven-links-free-spins-game-hack PDF link annotation
    • https://3qblocks.com.tw/image/data/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/moonactive-coin-master_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/114-hacks_GM479516143.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-33-hack-version-download_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-minecraft-server_GM479516143.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/hack-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/how-to-get-free-things-on-roblox_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-minecraft-java-code_GM479516143.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/minecraft-ore-finder-mod_GM479516143.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-hack-link_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/freespinandcoin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e47.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E47 25948 bytes
SHA-256: e9ac2398d551850b4bd1994b66bc44b5e0176c4eabdc191310eea4b96591f6a1
font_01_sfnt_off00008975.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8975 18168 bytes
SHA-256: 027d16a1c60dbd0eb1df4048bc3da2018b11e953b841f7f45fc354c272db0dc4

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