Malicious PDF — malware analysis report

Static analysis result for SHA-256 f463e23e602ed470…

MALICIOUS

PDF

34.4 KB Created: 2021-06-29 10:00:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7478750112a90bb009b4ec61e93c3a69 SHA-1: 032eed4566516ccf9a792af9091aa3c47c9c9f9e SHA-256: f463e23e602ed4705151a35700e6d66e83fa8326984aebf500daa20c7b6d846c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a prominent link disguised as a 'game hack' or 'free generator' lure, directly encouraging users to click through to a suspicious URL. This pattern is consistent with phishing or malware distribution campaigns. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristics strongly suggest a malicious intent to redirect users to potentially harmful content.

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.co/app/431946152/jump-faster-in-roblox-hack-game-hack PDF link annotation
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/where-to-get-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/free-roblox-robux-codes-for-roux_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/robux-cheat-net_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/robuxin-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/free-coins-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/roblox-creator-hack_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/i-think-my-roblox-account-was-hacked_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/free-robux-exe_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/minecraft-free-minecraft_GM479516143.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/how-to-get-any-hat-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/roblox-imperial-base-free-model_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/coin-master-real-hack_GM406889139.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/free-bobux_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/coin-master-free-spin-and-coin_GM406889139.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_off00002eed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EED 21972 bytes
SHA-256: 4602152c7738f1a0efbab5fdd756b340deb9d92c08b74e6e905c6358373246fc
font_01_sfnt_off00005f7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7C 19668 bytes
SHA-256: faac6ff5940f527c91249cef19cbec59118e289dba37f61aee053e7911ff77d1

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