Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e90c3afacd9a358…

MALICIOUS

PDF

36.0 KB Created: 2021-07-05 05:14:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4eab20042e5b52503edb78848f9e9c98 SHA-1: 2266f9082e0a8f916a6fb07742bbacb4442f95db SHA-256: 9e90c3afacd9a3582fef8a624c061528f621c2cac6b2bd0eba1a45601e2a85ac
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 0.9980

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 http://netcdn.tw/app/431946152/free-robux-thumbnail-game-hack PDF link annotation
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/how-to-make-a-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/how-to-het-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/dantdm-free-robux-code_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/coin-master-free-spins-2-5-2021_GM406889139.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/free-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/how-to-change-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/how-to-hack-into-dantdms-roblox-characters_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/all-the-hacking-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/how-to-get-free-robux-2021-august_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/roblox-counter-blox-spin-bot-hack_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/in-jack-hack-roblox_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/youtube-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/coin-master-70-spin-link-2021_GM406889139.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/roblox-promo-codes-2021-robux_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://belajar.matsaneta.net/__statics/gudangsoal/files/coin-master-2021_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
font_00_sfnt_off0000349f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x349F 22728 bytes
SHA-256: 3cc807419320b42421e373788b3397c678f1ba6b5592dd2212a2df6d1d74c4f5
font_01_sfnt_off00006740.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6740 19336 bytes
SHA-256: adbfa614176d12f8fda67e6e8d5b73dbc28431768a4cac05a3d314a7f167f1c3

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