Malicious PDF — malware analysis report

Static analysis result for SHA-256 384bb2277c8fc842…

MALICIOUS

PDF

35.0 KB Created: 2021-07-03 14:12:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8706f0c97f78df6b886edbe7a0c720e5 SHA-1: b42baa9de9f7a67b772fe85dd487fe09e6355271 SHA-256: 384bb2277c8fc842946b5966591577b5ac4ead0dad28f81fb79ea1c1e9700013
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites that promise free in-game currency or hacks, a common lure for phishing or malware distribution. The ML classifier strongly indicated maliciousness, and the heuristic firings confirm the presence of external URIs and a redirector lure. The document body text directly references 'free robux' and includes the primary malicious URL, suggesting the intent is to redirect users to a potentially harmful 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.tw/app/431946152/how-do-you-get-free-robux-on-roblox-game-hack PDF link annotation
    • http://falconshipping-uae.com/userfiles/files/increible-hack-robux-pastebincom-80b1sjzp_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/coin-master-apk-mod-hack-download_GM406889139.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/coin-master-hack-spin-ios_GM406889139.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/coin-master-hack-mod-apk-download_GM406889139.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/free-codes-for-toys-on-roblox_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/how-tf-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/300-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/how-to-get-free-hats-on-roblox_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/free-minecraft-mods-for-pc_GM479516143.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/roblox-hack-dll_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/spin-link_GM406889139.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/roblox-adventure-story-wraith-card-hack_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/how-to-get-tiktok-free-followers_GM835599320.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/are-roblox-emotes-free_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/free-spins-from-coin-master_GM406889139.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_off00003153.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3153 22188 bytes
SHA-256: 7141d4e52739251f9e4bf96572be4d7c1ac9b9a6c4fd529b14af28e70bccc6b3
font_01_sfnt_off000062d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D4 19388 bytes
SHA-256: bfe8901ed3b01612589fbf5cddaaa2e97b8ca06efec900f58c792d736f26eaab

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