Malicious PDF — malware analysis report

Static analysis result for SHA-256 d85d9d9b36ae9db1…

MALICIOUS

PDF

42.0 KB Created: 2021-05-11 23:47:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 34301fcdbccee3572dcc40de5111e5b0 SHA-1: 09997b5f30d1293c1010b93b0733431ace20c217 SHA-256: d85d9d9b36ae9db13a980c5d4ea3bc1cbe865b17548ed6185df14869d5ac7627
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 0.9971

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-game-hack-app-game-hack PDF link annotation
    • http://julo-it.net/images/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/coin-master-70-spin-link-2021_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/robux-redeem_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/play-roblox-for-free-on-google_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/blox-best-robux_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/coin-master-home_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • http://julo-it.net/images/hack-my-game-xyz-coin-master_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/coin-master-heaven-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/coin-master-reward-link-2021_GM406889139.pdfIn PDF document text
    • http://julo-it.net/images/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://julo-it.net/images/coin-master-hack-without-human-verification-india_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_off00004915.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4915 24788 bytes
SHA-256: a405f725c90b76a12576ff6f5f40f9e27f0652e2d5462ee84f42ae3343bb3da2
font_01_sfnt_off00008202.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8202 18152 bytes
SHA-256: a9beebf818d5886f30c9f2ca3dea49ae6ba882c6c1da3ca8fee2aac0910a50ab

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