Malicious PDF — malware analysis report

Static analysis result for SHA-256 833bfbad1e9922c8…

MALICIOUS

PDF

35.4 KB Created: 2021-07-01 07:36:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 1dd5668cf6c05a26c0167acbcb546ef4 SHA-1: 2b81e684e9a9db0baef99be603c2fd6fe8c80218 SHA-256: 833bfbad1e9922c8d6f3e1101f71129e07e67aebaf119e68e0ac6abb29368be5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic indicating it links to a 'free generator / game hack' redirector. The document body and embedded URLs reinforce this, pointing to a URL associated with game hacks and free items. This suggests a social engineering lure to drive users to a potentially malicious site.

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/479516143/make-your-own-minecraft-server-free-game-hack PDF link annotation
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/roblox-events-free-robux_GM431946152.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/free-robux-promo-codes-2021-march_GM431946152.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/bloxfree-roblox-hack_GM431946152.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/can-you-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/comment-hacker-le-cataloggue-de-roblox-2021_GM431946152.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/como-hackear-roblox-para-tener-robux-con-cheat-engine_GM431946152.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/free-private-server-roblox_GM431946152.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/www-bloxy-world-roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/robux-free-c_GM431946152.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/minecraft-games-free-to-play-online_GM479516143.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/how-to-install-minecraft-for-free-on-ios_GM479516143.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/free-robux-gift-card-codes-not-used-no-human-verification_GM431946152.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/roblox-prison-life-hacking_GM431946152.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/hacks-de-roblox-para-descargar_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_off000033c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33C3 22924 bytes
SHA-256: 3407f192d4658899f4edb9ae95ead394b2e3af645d7a310890333baf0df96418
font_01_sfnt_off00006683.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6683 18748 bytes
SHA-256: 63003ec613419245968a2153146fc981bbf37ebedebab2f7b5ca0331e325602d

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