Malicious PDF — malware analysis report

Static analysis result for SHA-256 b25f455795659537…

MALICIOUS

PDF

36.4 KB Created: 2021-07-03 23:47:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: e7fe296fd2423d34b321a1ca4f89a6f8 SHA-1: 567db44f92538d0a97daf20b5401027782c92a39 SHA-256: b25f4557956595378e9b3168a53d7b21d89ae7c6c81509700f0e681ff3d2ace0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to websites offering game hacks and cheats, such as 'how-to-get-roblox-premium-for-free-2021-game-hack'. This lure is a common tactic to trick users into visiting malicious sites. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

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/how-to-get-roblox-premium-for-free-2021-game-hack PDF link annotation
    • http://proyetec.com.co/aym_image/files/roblox-dll-hack-952021_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/free-movie-websites-tiktok_GM835599320.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/xray-mod-minecraft-114_GM479516143.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/how-to-download-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/coin-master-34-4-free-download_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/free-robux-disvord_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/coin-master-apk_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/dantdm-free-robux-code_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/hack-roblox-pc-download-no-clips_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/free-roblox-acc_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/free-roblox-account-dump_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/roblox-hack-com_GM431946152.pdfIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33F9 22640 bytes
SHA-256: 64cd0e5e47837aa2bd61cedeefd2e6d0fb652306409c180236034242b2f3781b
font_01_sfnt_off00006697.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6697 19992 bytes
SHA-256: 5d92c0ac708cb6372069878ce274a0583dd4db4fed5f7a9ab4827dfd753440d4

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