Malicious PDF — malware analysis report

Static analysis result for SHA-256 06ea02879a6fd396…

MALICIOUS

PDF

44.8 KB Created: 2021-05-15 16:15:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 6da36fa57294f0a474286c81e311bb11 SHA-1: 5ad361ce29ad0500db03c2ff522558ecb43b3951 SHA-256: 06ea02879a6fd396bc434be500fc08e2d89891ce148ababd2fbbcd246aa115ad
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to malicious infrastructure, specifically targeting users interested in game hacks and generators. The primary redirector URL is https://netcdn.xyz/app/431946152/roblox-inappropriate-games-game-hack, which is associated with known malicious activity. The document body, though heavily obfuscated, contains references to game-related lures and the authoring application suggests it was generated programmatically, likely to host these malicious links.

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 https://netcdn.xyz/app/431946152/roblox-inappropriate-games-game-hack In PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/robuxmatchcon_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/minecraft-hacked-apk_GM479516143.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/how-to-hack-coin-master-game_GM406889139.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/https-rbx-place-rewards_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/coin-master-jackpot-hack_GM406889139.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/minecraft-114-4-download_GM479516143.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/coin-master-free-spin-game_GM406889139.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/coin-master-hack-apk-app_GM406889139.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/minecraft-wurst-client_GM479516143.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/how-to-get-minecraft-bedrock-edition-on-pc-for-free_GM479516143.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/coin-master-apk-hack-mod-download_GM406889139.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/coin-master-free-spins-activegamer_GM406889139.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/free-robux-now_GM431946152.pdfIn PDF document text
    • http://dev.pmrscambodia.org/images/uploadfiles/http-blackgamesus-coinmasterhack_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_off00004aa4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AA4 28368 bytes
SHA-256: c226eba9b539821a388d6805b2d612a58ce550e57bcaa49538305dfb2311bd86
font_01_sfnt_off00008bc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BC3 18672 bytes
SHA-256: 0ec566ecd5d1a86c10a54aa75463edd1ab022be4c3718a292107c635b8cc8674

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