Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c0ce51aca60886e…

MALICIOUS

PDF

44.5 KB Created: 2021-05-17 05:04:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: c0e623cd9d7168262e9051903cacf2a7 SHA-1: c56f24758dd7059aac43f56b5a34aa20e18dd64b SHA-256: 7c0ce51aca60886e93661d558c1b382971dbc9cfcf57d86d4ee7fe8b16518c79
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a fake CAPTCHA lure to deceive users into clicking malicious links, such as the one pointing to 'how-to-hack-roblox-jailbreak-game-hack'. The document also contains numerous links to other PDF files hosted on 'unionmusicaldebenidorm.com', suggesting a downloader or redirector chain. The ML classifier strongly flagged this PDF as malicious, and the presence of redirector links indicates a high likelihood of further malicious activity.

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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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 https://netcdn.xyz/app/431946152/how-to-hack-roblox-jailbreak-game-hack In PDF document text
    • http://unionmusicaldebenidorm.com/images/roblox-free-download_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/coin-master-free-coins-link-2021-deutsch_GM406889139.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/coin-master-free-spin-link-daily_GM406889139.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/free-robux-today_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/how-to-get-minecraft-bedrock-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/coin-master-hack-iosgods_GM406889139.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/coin-master-hack-twitter_GM406889139.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/minecraft-114-4-download-free_GM479516143.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/coin-master-32-mod-hack-unlimited_GM406889139.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/demon-roblox_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/minecraft-hacks-115-2_GM479516143.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/free-executor-roblox_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/how-to-change-roblox-name-for-free_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004bea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BEA 26544 bytes
SHA-256: ab94b897beaf96635de95ee0fb477d74afff68f7b303ddd5dd84f828ad4b7a7c
font_01_sfnt_off00008aca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ACA 18632 bytes
SHA-256: f85879c678901057cc908d94130b71f9fb6e8ee5be1c9db29d303049c5d159a2

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