Malicious PDF — malware analysis report

Static analysis result for SHA-256 336570a023943031…

MALICIOUS

PDF

34.5 KB Created: 2021-06-18 03:10:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 67abff8400f471e9a2033c33ec87f6ab SHA-1: 98e1334865e7cac8dbf5f24eedb101451978473b SHA-256: 336570a0239430315304c9060edcbb4e7e04629afc9f08b354737b71fada4f88
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free Robux and game hacks to trick users into clicking malicious links. The embedded URLs, such as http://netcdn.co/app/431946152/new-obby-gives-you-free-robux-game-hack, are known to lead to malicious redirector infrastructure. The document's content and heuristic firings strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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
  • 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/431946152/new-obby-gives-you-free-robux-game-hack In PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-toy-codes-free_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-advertise-roblox-games-for-free_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-ss-executor-free-v3rmillion_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-cheat-codes_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/minecraft-free-edition_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-minecraft-wallpaper_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/get-all-eggs-roblox-hack-pastebin_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-roblox-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spins-link-31-march-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-gold-cards-hack-2021_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_off00002f92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F92 22128 bytes
SHA-256: 69b65ce3927620dfd1fc1be89674c25290291805de200d4483f8d4e8216f1047
font_01_sfnt_off00006090.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6090 19456 bytes
SHA-256: ebe59d4fbf4df064be09a821363b55588c4b224f576ea8933a2b28adf5a34807

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