Malicious PDF — malware analysis report

Static analysis result for SHA-256 bda2b56eba0bb54e…

MALICIOUS

PDF

49.6 KB Created: 2021-05-17 07:41:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 39bb29d624f1f714a08265eb0959de4f SHA-1: 07004d1a4e17631fc01a68a7b1962b9e750e8a70 SHA-256: bda2b56eba0bb54e5893d42130f6794612b8e04ba003a0ca6b835bf86f97757f
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 0.9349

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/how-to-get-free-robux-no-verification-game-hack PDF link annotation
    • https://miraller.com/upload/files/coin-master-hack-programers_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/how-to-make-a-minecraft-client_GM479516143.pdfIn PDF document text
    • https://miraller.com/upload/files/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://miraller.com/upload/files/coin-master-free-spins-hacktman_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/free-coin-master-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/how-to-make-a-group-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • https://miraller.com/upload/files/robux-no-verification_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/earn-robux_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • https://miraller.com/upload/files/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/coin-master-hack-online-without-human-verification_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/coin-master-400-spin-link-today_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/coin-master-game-free-spin_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/coin-master-hacks-android_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B81 31332 bytes
SHA-256: f161e7fd5f114bc39a45847da69a1a76d945db40924c8cc936bd706c1caa498e
font_01_sfnt_off000090d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90D7 3992 bytes
SHA-256: 43e72e756231cfd354bd65c2ed3b09ad4eff56ad11e7f155ed2920e6bb7860dd
font_02_sfnt_off00009dfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DFD 18764 bytes
SHA-256: a0d8f559ae1a84b7fc559fdee6dca3899797d6ff6e3d64572866459a8961df23

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