Malicious PDF — malware analysis report

Static analysis result for SHA-256 e020376416a9dcda…

MALICIOUS

PDF

45.5 KB Created: 2021-06-03 06:18:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 0866ccc6da4840a8f09f7c4fcde42b9a SHA-1: a82a5ba294a14037b92f59fc81bf3fba3ca0b425 SHA-256: e020376416a9dcda158090753de38fce51aaa66b26ab94d4ac9461a8786753c4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links to websites that offer free in-game currency or hacks, such as 'free Robux' or 'Coin Master hack'. One of these links, https://netcdn.online/app/431946152/free-robux-just-watch-ads-game-hack, is identified as a malicious redirector. The document body and heuristics indicate a lure for users to click these links, likely leading to further malicious content or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 4

  • 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.
  • 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.online/app/431946152/free-robux-just-watch-ads-game-hack In PDF document text
    • https://fridaytravelnepal.com/userfiles/files/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-get-free-shields-on-coin-master_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-minecraft-packs_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-co_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/javascript-free-robux_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/minecraft-hacks-for-2b2t_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-roblox-followers-generator-2021_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/robux-fun-hack_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-get-free-robux-on-roblox-2021_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_off00004e9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E9D 27528 bytes
SHA-256: fe0801453f854f8f01f2abe8ff5e1c61f3616289af892b1952795aeb4516204c
font_01_sfnt_off00008cdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CDF 19048 bytes
SHA-256: 26b22b313ac9ba1bfb585d9262f535ef1e67dc099714f774f7621e2b6d528ec8

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