Malicious PDF — malware analysis report

Static analysis result for SHA-256 8afdfee20255da1c…

MALICIOUS

PDF

41.6 KB Created: 2021-05-12 03:08:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 0c7346b024ad2d0628073b2609c769cd SHA-1: dc674fcbfe9a753eee186b42ca44cd4cdbacac81 SHA-256: 8afdfee20255da1c46fd42f8be6fcd573d3571d5e90c6b41f27bd24a2ecc51ea
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites that offer game hacks and in-game currency, such as 'Coin Master Hack' and 'Robux'. These links are flagged as malicious redirectors, indicating a high likelihood of leading to phishing pages or malware downloads. The document body and heuristics confirm the lure is related to game hacks, suggesting an attempt to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/coin-master-hack-ios-apk-game-hack In PDF document text
    • https://www.xenonsvjetla.com/files/robux-without-verification_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/earn-rbx_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/best-site-for-free-coin-master_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coin-master-hack-mod-apk-android-1_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-hack-100-working_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-minecraft-bedrock-server_GM479516143.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/hack-coin-master-android-2021_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/minecraft-kill-aura_GM479516143.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-spins-on-coin-master-cheat_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-daily-free-spins-link-today-2021-free_GM406889139.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_003_off000048c6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48C6 24512 bytes
SHA-256: 36af9dff0a21d297416ec35d62ed4548a10509c6ccd4939108104bfb8cc901a8
font_01_sfnt_off00008157.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8157 17892 bytes
SHA-256: c18f05485291fd9dd2d982fa815b69c2a1f9afc9df9b250f8ccfc4cbb8514acf

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