Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8f7cf1f15b05435…

MALICIOUS

PDF

34.0 KB Created: 2021-06-30 22:35:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 46d62b680e2b5d62b9f854542faca1f5 SHA-1: a2106f405a3e2b52f1eb119d9814345f6736379f SHA-256: b8f7cf1f15b05435173edcc727ba7e51b3e3ddfbd8de720a84083b9e494bcdf1
160 Risk Score

Malware Insights

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

The PDF contains multiple links and document body text that directly advertise 'Robux Hack' and 'game hack' generators, leading to a known malicious redirector. The primary heuristic firings confirm the presence of malicious redirector links and a lure for game hacks. While no scripts were extracted, the embedded URLs and the nature of the lure suggest a phishing or scam attempt to redirect users to potentially malicious sites for credential harvesting or malware delivery.

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/robux-hack-no-survey-no-offer-game-hack In PDF document text
    • https://ibelive.com.tw/image/data/files/coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-tiktok-likes-and-followers_GM835599320.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/como-descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/coin-master-hack-tool-apk-download_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/smart-lodhi-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/coin-master-mod_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-tiktok-accounts-with-followers_GM835599320.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/hack-master-coin-pc_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/pastebin-get-free-robux_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/minecraft-wurst-client_GM479516143.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/how-to-get-roblox-money_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/roblox-html-hack_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-robux-cydia_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/get-free-minecraft-account_GM479516143.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-roblox-accounts-generator_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-roblox-today_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_off00002e70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E70 22112 bytes
SHA-256: e39856946dbda3cd7f6d19f83f88207dfa0905934e79a4e7767c39257f67300d
font_01_sfnt_off00005fae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FAE 19016 bytes
SHA-256: f67e68ce27f132db73f83b277f3ce3d69df7bda07e99b8fd18eb085517c2625a

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