Malicious PDF — malware analysis report

Static analysis result for SHA-256 04794875c663d8a4…

MALICIOUS

PDF

48.3 KB Created: 2021-05-15 00:14:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: e63e89e52746289642b4da5acdf745a8 SHA-1: 1c0e346cbc473953ac5f036591ab14318dd72933 SHA-256: 04794875c663d8a42d601c3348898e53ea63a86e6db3b1cb003e6b32d24eebbb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to websites promising game hacks and generators, a common lure for phishing and scams. The heuristic firings, particularly 'PDF_GAME_HACK_REDIRECT_LURE' and 'PDF_MALICIOUS_REDIRECTOR_LINK', strongly indicate malicious intent. While no scripts were explicitly extracted, the document structure and embedded links suggest a workflow designed to lead the user to potentially harmful external content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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/robux-robux-game-hack In PDF document text
    • http://zarinnameh.ir/images/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/coin-master-apk-hack-35-8_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/coin-master-hack-online_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/how-to-hack-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/coin-master-event-hack_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://zarinnameh.ir/images/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-minecraft-svg-cutting-files_GM479516143.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/robux_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-spin-gratis-coin-master_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/roblox-cheat-codes_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_003_off00004a40.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A40 36948 bytes
SHA-256: 09c7f0b6f2ad47c8c727daeae0f7915f3a51d8a53824b9a08acedfa170377eda
font_01_sfnt_off00009c1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C1C 17852 bytes
SHA-256: fa3705be5ee6565d64fcba6f9827690fa2c8bb031b8e73c4196ce8f5ba2d7c1a

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