Malicious PDF — malware analysis report

Static analysis result for SHA-256 2405edc012da5af6…

MALICIOUS

PDF

40.9 KB Created: 2021-05-12 16:01:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: f9b2f880f3b1c8e9f57e49c61b49f333 SHA-1: a659fd31edd61146dc4d7ed91e6d55e0e0e02774 SHA-256: 2405edc012da5af69fdf7f9d1a11250df7a4157007b272d5bd7258690ff9ff15
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically advertising "free generator / game hack" lures. The primary malicious URL identified is https://netcdn.xyz/app/406889139/master-coin-free-spin-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack designed to lead users to potentially malicious content or further downloads.

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/master-coin-free-spin-game-hack In PDF document text
    • http://atiltd.com.tw/upload/files/minecraft-pe-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/free-robux-place_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/optifine-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/hack-coin-master-apk-32_GM406889139.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/games-that-can-be-hacked_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/best-site-for-free-coin-master_GM406889139.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/how-to-get-more-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/free-robux-live_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/minecraft-xbox-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000046cc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46CC 24208 bytes
SHA-256: 548744f8d04f53560e4dfbb06b2ae21bc2b3c9d337d336ddabdd04676658ac5a
font_01_sfnt_off00007e83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E83 17884 bytes
SHA-256: 2eace5707960ab6674c345fc5925bb74d79b72c9d0e947ec779627780b9711cb

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