Malicious PDF — malware analysis report

Static analysis result for SHA-256 b86a9ffdd9d5bcc8…

MALICIOUS

PDF

40.5 KB Created: 2021-05-19 03:40:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5693f73ccff650aba589f484da4cce8d SHA-1: 543c9c8fa7a750dabb4b9d2964e61be3294c1963 SHA-256: b86a9ffdd9d5bcc8dd351a0fadcb173228503d6212da6bb974d9327b09425111
122 Risk Score

Malware Insights

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

The PDF document contains a lure related to game hacks and free generators, instructing the user to install a browser extension or update. This is a common social engineering tactic to facilitate malware installation or credential theft. The document embeds multiple URLs, likely serving as download or redirect locations for malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/835599320/is-tiktok-free-to-watch-game-hack PDF link annotation
    • http://ines.co.rs/images/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/how-to-get-robux-fast_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/pig-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/lots-of-robux_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/bux-free-robux_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/coin-master-free-spin-facebook-link_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/8bp-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • http://ines.co.rs/images/get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/how-to-get-free-mods-in-minecraft_GM479516143.pdfIn PDF document text
    • http://ines.co.rs/images/coinmaster-free-cards_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/coin-master-free-spins-and-coins-for-iphone_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/coin-master-heaven-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/roblox-hax_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/getrobux-ninja_GM431946152.pdfIn PDF document text
    • http://ines.co.rs/images/coin-master-free-coins-amp_GM406889139.pdfIn PDF document text
    • http://ines.co.rs/images/how-to-get-free-robux-on-pc_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
stream_003_off000043d3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x43D3 24484 bytes
SHA-256: 0838b53860a40163fa0bd046d5feb52d9fcad80eb2f9589fdc698a700169ce01
font_01_sfnt_off00007c7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C7B 18048 bytes
SHA-256: e949387049a2a4b4aba654e070b7e00a11f2357ed82cefff6aa766e108e3e588

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