Malicious PDF — malware analysis report

Static analysis result for SHA-256 b419022a75f01c92…

MALICIOUS

PDF

41.9 KB Created: 2021-05-19 01:14:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8cc7943a42343cce5a35451eceee2579 SHA-1: fdf6a4a3788343a0220783e81aa487f75cddbf03 SHA-256: b419022a75f01c9214c4b75687ecdcd34c355014a00b12c798d57ab65bdd536e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded URLs and a document body that attempts to trick the user into downloading a game hack. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple download-related URLs reinforces this assessment. The document likely serves as a lure to download a second-stage payload.

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/479516143/minecraft-free-ios-2021-game-hack In PDF document text
    • http://astdubai.co/userfiles/files/coin-master-free-spins-and-coins-app_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/hack-avatar_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/haktutsin-2021-09-coinmaster50freespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-hack-app-2021-download_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-game-hack-online_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-free-spins-no-survey_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-get-free-skins-in-roblox_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-get-free-spins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/blox-fun-info_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-free-fire_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-free-spins-link-today-facebook_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_off000048ab.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48AB 25372 bytes
SHA-256: 2a68dd5762a6682988473fc6b94f2cc17986d293993b08297acc3bc09c491675
font_01_sfnt_off000081e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81E0 18112 bytes
SHA-256: b55c1404a277e69c847ae3cf6ace6563469f03eb0031cfae1db94f462975a683

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