Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8e940e87a08e68e…

MALICIOUS

PDF

33.3 KB Created: 2021-07-03 21:43:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 04c3c511ef8bd59306491ea4fdee9f80 SHA-1: ca5400b02b9fca493f47c016c0b9cc40cd3fbc3a SHA-256: a8e940e87a08e68e878e32f87dc137ee459514084c6bcee68188bab4b2ff8688
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is designed as a lure, using the promise of game hacks and free currency to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or exploits. The document's content and embedded URLs strongly suggest a phishing or scam campaign aimed at users interested in popular online games.

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/406889139/coin-master-home-game-hack In PDF document text
    • http://astdubai.co/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/minecraft-hacks-xbox-one_GM479516143.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-free_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-free-gold_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/roblox-free-clothes-girl_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-hack-tool-no-survey_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/toolbox-mod_GM479516143.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-robux-meme_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/como-hackear-cuentas-de-roblox-real_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-to-hack-roblox-money-on-ipad_GM431946152.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
stream_002_off00002d4c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2D4C 22752 bytes
SHA-256: bc09ce5b05c1b95c7d3443f3ef8b182c5aeaa559d83a8cc69c62b9cbcdf1e9d9
font_01_sfnt_off00005fd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD7 18092 bytes
SHA-256: ba905ac73eef98627ce31f9a61196988fba84150967a6aeb5bce2c15a28684d9

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