Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d9c2a4c9c3fb6a3…

MALICIOUS

PDF

34.4 KB Created: 2021-06-20 17:52:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 622efd4b81c57cda8d29779f1663d6b1 SHA-1: f07b6ee38ecbe9ebf900b7e9801dbd74a09126e4 SHA-256: 9d9c2a4c9c3fb6a356744b625d2f8c43593dd8d541791728d4acd30dc757746f
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to websites offering 'free Robux' or game hacks, a common lure for phishing or malware distribution. The ML classifier strongly flagged this PDF as malicious. The document body and heuristics indicate the primary goal is to redirect the user to potentially malicious external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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.
  • 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
  • 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/431946152/free-robux-no-verification-or-offers-game-hack PDF link annotation
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/links-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/coin-master-tips_GM406889139.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/how-to-get-followers-on-tiktok-for-free_GM835599320.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/hack-robux-gratuit_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/how-to-get-free-roblox-inspect_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/roblox-com-free-play_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/aimbot-exe-roblox_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/free-robux-com_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/blox-land-l-free-robux_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/robux-free-c_GM431946152.pdfIn PDF document text
    • http://cpsad.adturekorea.co.kr/newboard/_upload/userfiles/files/free-coins-and-spins-for-coin-master-game_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_off00003041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3041 22104 bytes
SHA-256: 7a027666ad86a404be37753514c8120c8225fe8bc4f6027bd74918ce29210790
font_01_sfnt_off00006139.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6139 19072 bytes
SHA-256: 3a7b74bf2de6bcb9b9c2fcd89f3f3bac5795b82793be7f7c017f4c45e37bab14

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