Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f62492fc8264ac9…

MALICIOUS

PDF

42.5 KB Created: 2021-05-16 11:35:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6d7cc650914194e2d0068da7e9cadc34 SHA-1: 940c8f8b706211fa94245b791fa2df230b9a4048 SHA-256: 0f62492fc8264ac99514c7c96ad5fa5d2f8b070fd406372ff2c403d9e7806194
82 Risk Score

Malware Insights

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

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/479516143/minecraft-free-version-game-hack PDF link annotation
    • https://www.ausecus.com/images/unlimited-spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.ausecus.com/images/wurst-mc_GM479516143.pdfIn PDF document text
    • https://www.ausecus.com/images/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • https://www.ausecus.com/images/minecraft-tower-defense-hacked_GM479516143.pdfIn PDF document text
    • https://www.ausecus.com/images/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • https://www.ausecus.com/images/javascript-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ausecus.com/images/minecraft-java-edition-free-download-for-android_GM479516143.pdfIn PDF document text
    • https://www.ausecus.com/images/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ausecus.com/images/download-hacked-games-com-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ausecus.com/images/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.ausecus.com/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.ausecus.com/images/coin-master-pc-hack-tool_GM406889139.pdfIn PDF document text
    • https://www.ausecus.com/images/roblox-skin-free_GM431946152.pdfIn PDF document text
    • https://www.ausecus.com/images/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.ausecus.com/images/com-roblox_GM431946152.pdfIn PDF document text
    • https://www.ausecus.com/images/play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://www.ausecus.com/images/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ausecus.com/images/how-to-download-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • https://www.ausecus.com/images/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.ausecus.com/images/actual-free-robux_GM431946152.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_off00004c2d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C2D 25104 bytes
SHA-256: 23b19dcce852cc401db518bbd7f43d0da729b09c06296f502b87ffb70f1a7aa3
font_01_sfnt_off00008501.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8501 17844 bytes
SHA-256: f3924605f7b3f22f10abcb19e882a5c4663272546a5aeaf73baf968c6ecbf21f

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