Malicious PDF — malware analysis report

Static analysis result for SHA-256 2199eab1f056ab15…

MALICIOUS

PDF

41.5 KB Created: 2021-05-16 21:03:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 26bd8bd7f706ba0b6d09dbf0134b0e08 SHA-1: 3017480a0ed62bec2616256e1c171c7522d56954 SHA-256: 2199eab1f056ab1512631a5807c296984a0512f1fb34750e2aef07e08210228d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically promoting game hacks and free generators. The primary malicious URL identified is https://netcdn.xyz/app/406889139/free-spin-link-coin-master-app-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering tactic to lure users to potentially malicious websites, likely for further exploitation or malware delivery.

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/free-spin-link-coin-master-app-game-hack In PDF document text
    • https://icefuture.ru/images/watch-ads-for-robux_GM431946152.pdfIn PDF document text
    • https://icefuture.ru/images/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • https://icefuture.ru/images/coin-spin-link_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/how-to-hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/coin-master-hack-reddit_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • https://icefuture.ru/images/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • https://icefuture.ru/images/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • https://icefuture.ru/images/toolbox-for-minecraft-pe-ios_GM479516143.pdfIn PDF document text
    • https://icefuture.ru/images/change-roblox-username-free_GM431946152.pdfIn PDF document text
    • https://icefuture.ru/images/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • https://icefuture.ru/images/how-to-hack-coin-master-pc_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/easy-robux-hack_GM431946152.pdfIn PDF document text
    • https://icefuture.ru/images/free-coin-master-game_GM406889139.pdfIn PDF document text
    • https://icefuture.ru/images/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • https://icefuture.ru/images/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://icefuture.ru/images/roblox-microsoft-rewards_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_off00004731.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4731 24984 bytes
SHA-256: 92002e70544604548c85aa330cce46caa82a72ce0066cd3c48b4333e7e7b9bba
font_01_sfnt_off0000807e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x807E 18056 bytes
SHA-256: ebbf7a22afcd0cf508ceb812a131aae4598156f522305d6cc1c9940cc11c625a

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