Malicious PDF — malware analysis report

Static analysis result for SHA-256 eba7123cd23ad917…

MALICIOUS

PDF

35.8 KB Created: 2021-06-27 13:15:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 4fc5e5546b671a1e3ca00a5a3684a615 SHA-1: 2e68b58bc74e6364dda99e88644a1286846a49c7 SHA-256: eba7123cd23ad9179f09c2bd664b0fcea6b8ddf39531166ae64b8f671c2c28f2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirector lure, pointing to a specific URL. This URL is presented as a 'download' link within the document body, suggesting a social engineering tactic to trick users into visiting a malicious site. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/how-to-get-pants-for-free-on-roblox-without-bc-game-hack In PDF document text
    • https://www.tiancom.com.tw/upload/files/how-to-get-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/download-roblox-windows-7-free_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/roblox-gift-cards-hack_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/robux-fun-hack_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/codes-for-roblox-weight-lifting-simulator-3-hack_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/body-roblox_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-free-spins-april-2021_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/hack-roblox-perfil_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/robux-onlineusroblox-hackunl_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/www-coin-master-hack-com_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/why-dont-we-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/how-to-get-your-robux-back-without-hacking-or-buying_GM431946152.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-hack-spin-generator-tool_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/coin-master-apk-hack-358_GM406889139.pdfIn PDF document text
    • https://www.tiancom.com.tw/upload/files/roblox-hack-codes_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_off00003290.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3290 22512 bytes
SHA-256: 2a47a2d166d05529d6b60f4b19b9b1f4708b308c42d8ec17765641da2009523e
font_01_sfnt_off00006504.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6504 19696 bytes
SHA-256: 747f0ac810c803b6f6e9e5d02c96887648ba790c57fec07724fa3e89e2f5b939

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