Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ca09434fb671f92…

MALICIOUS

PDF

46.5 KB Created: 2021-05-11 22:02:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: cab6984b5635216f128c593230096db9 SHA-1: ccc5215887212100639a7eda1599cc121e3dc629 SHA-256: 0ca09434fb671f92e29426873846b6e28adbb6416b88bd7685c406931722a047
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure for game hacks, specifically mentioning 'Robux', and links to a suspicious URL. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/431946152/robux-xyz-game-hack PDF link annotation
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/free-minecraft-texture-packs-java_GM479516143.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/free-robux-android_GM431946152.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/toolbox-for-mcpe_GM479516143.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/coin-master-hack-cheat-generator-coins-and-spins-unlimited_GM406889139.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/wwwcoin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/xray-mod-minecraft-114_GM479516143.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/roblox-online-free_GM431946152.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/hack-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://robuxhaxs.comIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b38.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B38 25584 bytes
SHA-256: e6e85bee933570470e8ba64e724e18e006c2f1c945f7f01ff3ca46fa4fc236c1
font_01_sfnt_off000086b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86B0 3992 bytes
SHA-256: 43e72e756231cfd354bd65c2ed3b09ad4eff56ad11e7f155ed2920e6bb7860dd
font_02_sfnt_off000093d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93D7 18112 bytes
SHA-256: ca7f5f9618641a98a9c19d491d3cdfb459cfe3a3cc083d97c385a6405de8606e

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