Malicious PDF — malware analysis report

Static analysis result for SHA-256 f636a2c0ab3323fe…

MALICIOUS

PDF

46.0 KB Created: 2021-05-14 14:56:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: c6cd3e13fb39700aa181e6a26c632ce2 SHA-1: 8e71bcad8b31a8a67ea26ce900cd226c389b87c8 SHA-256: f636a2c0ab3323fec392e6bbf3e7be424b62781e9d87305c400791adf1deac80
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a QR-code lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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 https://netcdn.xyz/app/479516143/minecraft-free-online-unblocked-game-hack PDF link annotation
    • https://www.solucionesdigit.com/images/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.solucionesdigit.com/images/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • https://www.solucionesdigit.com/images/grab-points-login_GM431946152.pdfIn PDF document text
    • https://www.solucionesdigit.com/images/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.solucionesdigit.com/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://www.solucionesdigit.com/images/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://www.solucionesdigit.com/images/minecraft-java-edition-free-trial_GM479516143.pdfIn PDF document text
    • https://www.solucionesdigit.com/images/need-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.solucionesdigit.com/images/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://www.solucionesdigit.com/images/coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • https://www.solucionesdigit.com/images/give-me-robux-now_GM431946152.pdfIn PDF document text
    • https://www.solucionesdigit.com/images/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.solucionesdigit.com/images/robuxy-com-generator_GM431946152.pdfIn PDF document text
    • https://www.solucionesdigit.com/images/get-coin-master-cards-free_GM406889139.pdfIn PDF document text
    • https://www.solucionesdigit.com/images/coin-master-gift-link_GM406889139.pdfIn PDF document text
    • https://www.solucionesdigit.com/images/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.solucionesdigit.com/images/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • https://www.solucionesdigit.com/images/coin-master-computer-hack_GM406889139.pdfIn PDF document text
    • https://www.solucionesdigit.com/images/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • https://www.solucionesdigit.com/images/roblox-free-robux-generator_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004cb3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CB3 25216 bytes
SHA-256: 37456f89b5bb8b7d63a1aab0c83be5460797f392d7c2d38fde65277810eefbe7
font_01_sfnt_off0000869e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x869E 3128 bytes
SHA-256: 801f6fa60decd1add2f223f91580103c35e150c924465f86a7a572b3e00674f9
font_02_sfnt_off000090de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90DE 18472 bytes
SHA-256: abb7a985c0805b7a76c0c4535c5556453d230e477aa0a832b20693e75b2d3697

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