Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8651c4a104d5d7e…

MALICIOUS

PDF

33.2 KB Created: 2021-06-17 16:29:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a6f30711a3e9bebc92f572ab905b3e40 SHA-1: 2ad76b0852247ea00c914024ac7e9691824811b1 SHA-256: e8651c4a104d5d7e1e2b93d8a2c5ccb7ec7c186599eb06d10eebd20716964c43
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to the URL http://netcdn.co/app/431946152/pastebin-hack-robux-game-hack. This URL is also flagged as a malicious redirector. The document body and embedded URLs reinforce the theme of game cheats and hacks, suggesting a social engineering attempt to trick users into visiting malicious sites. No scripts were extracted, but the primary attack vector appears to be a malicious link within the document.

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/pastebin-hack-robux-game-hack In PDF document text
    • https://asiavisiontreks.com/userfiles/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/coin-master-cheat-apk-free-download_GM406889139.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/coin-master-daily-free-spins-link-today-blog_GM406889139.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/free-spin-app-coin-master_GM406889139.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/free-spin-coin-master-link-download_GM406889139.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/can-you-give-me-robux_GM431946152.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/coin-master-hack-online-android_GM406889139.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/coinmaster-links_GM406889139.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/how-to-avoid-being-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/minecraft-free-school_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F34 21120 bytes
SHA-256: 88dbb388c2e7a2da245a2268bbd3e122ab1f2ef0c2e4081f69b73461d2102730
font_01_sfnt_off00005d0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0E 18916 bytes
SHA-256: e2998bbc238cb93a7b88dacd5db6fecc3d117663bc1c68bc1a2341051d28cf49

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