Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8887e851e356ff4…

MALICIOUS

PDF

34.8 KB Created: 2021-07-01 07:06:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: dea81571cccb80ea4fc8b812ebe149fb SHA-1: 86035db440ff4d2e00f9c520ff88e3b4edef644b SHA-256: d8887e851e356ff4b478cd9781864da16371be2139f8d1056c6f5fdcf226c29d
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.co/app/431946152/rblx-city-free-robux-game-hack PDF link annotation
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/free-views-on-tiktok_GM835599320.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/coin-master-hack-that-actually-works_GM406889139.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/roblox-hack-me_GM431946152.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/coin-master-hack-mod_GM406889139.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/free-minecraft-skins-pe_GM479516143.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/hacks-roblox_GM431946152.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/minecraft-font-free_GM479516143.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/free-roblox-animations_GM431946152.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/coin-master-hack-dot-xyz_GM406889139.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/no-human-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/coin-master-pro-hack_GM406889139.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • https://ruangpintar.man1gresik.sch.id/__statics/gudangsoal/files/roblox-rape_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
font_00_sfnt_off0000308c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x308C 22256 bytes
SHA-256: 3bbc79b245f770727c09293cab1485f31975f31eb0e6cf412415d9ff11085a45
font_01_sfnt_off0000626a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x626A 19196 bytes
SHA-256: f2f3397c6c781d56e9789bf5c46018266820e8d927479f7a86dfea2d7904bf30

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