Malicious PDF — malware analysis report

Static analysis result for SHA-256 904103cf61dfa8d3…

MALICIOUS

PDF

43.5 KB Created: 2021-06-03 11:26:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 2dd099efec1e62709c7e9c56a9f52f9d SHA-1: d3820094c15cead989e8a0a2fdc816fb4c102d72 SHA-256: 904103cf61dfa8d3c173c268d33295835f1960f3054d9be46b8334ed1241da15
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and a visual lure to a "game hack" website, specifically targeting "Coin Master" players. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or to download further malware. The document body itself is heavily obfuscated and contains metadata from wkhtmltopdf.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/coin-master-hack-app-ios-download-game-hack PDF link annotation
    • http://slims.abulyatama.ac.id//repository/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/how-to-get-free-spins-grom-coin-master_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-free-generator_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-hack-apk-android-1_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-instagram-free-spins_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/how-to-download-wurst_GM479516143.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/hack-version-of-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/is-roblox-free-on-xbox_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-ios-hack-download_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/coin-master-pc-hack-download_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/easy-roblox-today_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/play-coin-master-online-free_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/apk-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id//repository/coin-master-spins-for-free_GM406889139.pdfIn PDF document text
    • http://slims.abulyatama.ac.id/repository/tiktok-free-download-video_GM835599320.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_004_off00004e9e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E9E 24440 bytes
SHA-256: d3a8e60182e3785fb076240dcf11212d5531355dff30da4b8a9ecd580665d4b2
font_01_sfnt_off0000867f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x867F 18472 bytes
SHA-256: 0c4cab68c529531eb2b4d04ec138a4fc88ce066c8f2d87c6dc4b9eb8bdd1696f

Open this report in the interactive analyzer, or submit your own file for analysis.