Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d8a181d13484179…

MALICIOUS

PDF

34.5 KB Created: 2021-07-05 16:30:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 619cc5f6069f08d9afd5f6b2763468f2 SHA-1: d547c5c8d0925524fd420ecf7fc241d7534d299f SHA-256: 3d8a181d13484179ae3f6c0ed35911bed261194caf987c2e05676d001c69f839
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, masquerading as game hacks or generators for popular games like Roblox and Coin Master. The primary lure, 'free-800-robux-game-hack', directs users to a suspicious domain, indicating a likely phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to potentially malicious sites, aligning with common social engineering tactics.

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/free-800-robux-game-hack PDF link annotation
    • http://razredna-nastava.net/files/roblox-prison-life-hack-2021_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/coin-master-free-spins-and-chips_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/how-to-gift-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/how-much-robux-can-you-get-with-1-million-dollars_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/elts-hack-roblox_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/hacker-shirt-roblox-id_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/apps-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/irobux-com-redeem_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • https://razredna-nastava.net/files/roblox-666-hack_GM431946152.pdfIn PDF document text
    • http://razredna-nastava.net/files/pokemon-go-free-90-iv_GM1094591345.pdfIn PDF document text
    • http://razredna-nastava.net/files/roblox-place-rewards_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-robux-without-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://razredna-nastava.net/files/roblox-free-hair-girl_GM431946152.pdfIn PDF document text
    • https://razredna-nastava.net/files/roblox-builders-club-free_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_off000030f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30F4 21924 bytes
SHA-256: aa59ff954407a0d9db3406524febf19e6c78319069475b12ad2fa4e242a38ddd
font_01_sfnt_off00006180.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6180 19100 bytes
SHA-256: 0ebfa7702a782f6f4faf41f8567968345b55cc7a7d3e2a6dc37d1edcf849371e

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