Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ba8808bf7d4e937…

MALICIOUS

PDF

33.7 KB Created: 2021-07-04 11:40:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 15969641fe53cbd4394cd597bc1989a0 SHA-1: 424002acebcf948b22085bb85019b772bc8f79f1 SHA-256: 0ba8808bf7d4e9373943065a4de5d9a1aaad4a4a8e5bf72bb63b485a0aa9f758
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting 'free generator / game hack' lures. The embedded URLs and document body text strongly suggest a phishing or scam attempt designed to trick users into visiting malicious sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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.tw/app/431946152/freerobuxhack-us-game-hack In PDF document text
    • http://astdubai.co/userfiles/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-hack-apk-33-download_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-free-spin-game_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/roblox-catalog-free_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-spins-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-hack-twitter_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/hacker-roblox-portable_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/roblox-money-cheats-2021_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/john-doe-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/script-executor-roblox-free_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/haktuts-coin-master-today_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/minecraft-ios-mods_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_off00002c92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C92 22512 bytes
SHA-256: 42b3a2c9cfcbc137161a9bc317a1429e5481a8a367560b9e18f08b553fd86df6
font_01_sfnt_off00005ed9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED9 19052 bytes
SHA-256: c1038e7d89f1ea622150dad11e67ee63de9f932b5b751318ecfe3d6f6dbf7066

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