Malicious PDF — malware analysis report

Static analysis result for SHA-256 a676c60c803f3d07…

MALICIOUS

PDF

35.3 KB Created: 2021-06-24 21:35:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 5d95702dfade5ff5c161dffc21d46935 SHA-1: 9338e13ff7c25a842bab7b0b7c4d8a3b88687527 SHA-256: a676c60c803f3d07c281b3913910796f69ba4683be8f486c6442c6540a14a564
82 Risk Score

Malware Insights

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

The PDF file contains a high-severity heuristic indicating it links to a game hack lure, specifically pointing to a URL designed to trick users. The document body, though partially garbled, contains the same URL, reinforcing the lure. The ML classifier also flagged this PDF as malicious with high confidence. The primary IOC is the malicious URL which likely serves as a redirector to a 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/406889139/coin-master-cheats-without-verification-game-hack PDF link annotation
    • https://www.advancissurgical.com/uploads/files/files/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-premium-roblox_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-robux-gruops_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-free-spin-and-coin-link-app_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-hack-org_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/minecraft-iphone-free_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-account-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-roblox-executor_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/minecraft-java-account-free_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/minecraft-xbox-free_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/lazy-blocks-com-free-robux_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_off000032c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32C8 23040 bytes
SHA-256: 73f9476db0cb56ecd0a32fab8f70258faba7368c0ad00894eeb7ed5294ca8ad9
font_01_sfnt_off0000668c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x668C 18472 bytes
SHA-256: 2357afe3a77e7c014e0703bcbd81075a5d1dab6d586aa1429deb4951cf781cee

Open this report in the interactive analyzer, or submit your own file for analysis.