Malicious PDF — malware analysis report

Static analysis result for SHA-256 9de7d6f2bda714cd…

MALICIOUS

PDF

35.1 KB Created: 2021-06-26 05:42:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 2067f39b692e74b258f9619d773cd002 SHA-1: bd19c89926e9b4201c5a67432ab4950913eff83d SHA-256: 9de7d6f2bda714cd7a064364a2f89b6890a9eaa89ffbdafba870073e54140c33
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and game hack lures, such as 'Get Free Robux Pastebin'. The primary URL, http://netcdn.co/app/431946152/get-free-robux-pastebin-game-hack, is identified as a malicious redirector. The document body and embedded URLs strongly suggest a social engineering tactic to trick users into visiting malicious sites, likely for malware distribution or credential harvesting.

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/get-free-robux-pastebin-game-hack In PDF document text
    • http://pustaka-smpn3tpi.com//repository/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-free-spins-2021-ios_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-cheat-engine-bypass-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-games-like-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-fan-page_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-hack-progamers_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-robuxs-2021_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-level-3_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/get-free-robux-without-builders-club_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-to-get-animations-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/legitimate-coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-minecraft-skins-java_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-hacks-for-iphone_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/i-got-hacked-playing-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F93 23420 bytes
SHA-256: 1a4c9b15711edd1f09eb052010f07af28d4ee6fc21dd70a943f6e486fea7529f
font_01_sfnt_off00006419.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6419 19092 bytes
SHA-256: 2fabae1baa115ceb6e385ece475cf8a3975c5680400c22fa27e6f6aae913547e

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