Malicious PDF — malware analysis report

Static analysis result for SHA-256 c60d27943e9ed7df…

MALICIOUS

PDF

44.5 KB Created: 2021-05-15 00:38:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: dc01f000eda8a9e661c62bded001af30 SHA-1: 47649c20e7a88c1578f1aa35d3a2a9fad98c729b SHA-256: c60d27943e9ed7dfc9f9d3ea97f36246d6214b0c3d3baf2371f0f91f3ee8def4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, masquerading as game hacks and generators. The primary lure URL is https://netcdn.xyz/app/406889139/coin-master-free-spins-link-today-game-hack, which is associated with a 'free generator / game hack' theme. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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-free-spins-link-today-game-hack In PDF document text
    • http://beagle-cindy.de/images/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://beagle-cindy.de/images/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://beagle-cindy.de/images/how-do-i-get-robux_GM431946152.pdfIn PDF document text
    • http://beagle-cindy.de/images/coin-master-hack-unlimited-spins-game-download_GM406889139.pdfIn PDF document text
    • http://beagle-cindy.de/images/how-to-use-wurst_GM479516143.pdfIn PDF document text
    • http://beagle-cindy.de/images/robux-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://beagle-cindy.de/images/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • http://beagle-cindy.de/images/how-do-u-get-robux_GM431946152.pdfIn PDF document text
    • http://beagle-cindy.de/images/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • http://beagle-cindy.de/images/coin-master-free-link-daily_GM406889139.pdfIn PDF document text
    • http://beagle-cindy.de/images/coin-master-free-spins-daily-link-game-mod_GM406889139.pdfIn PDF document text
    • http://beagle-cindy.de/images/free-spin-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://beagle-cindy.de/images/free-minecraft-hosting_GM479516143.pdfIn PDF document text
    • http://beagle-cindy.de/images/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • http://beagle-cindy.de/images/coin-master-spin-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://beagle-cindy.de/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://beagle-cindy.de/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://beagle-cindy.de/images/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • http://beagle-cindy.de/images/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://beagle-cindy.de/images/roblox-games-com-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049a2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49A2 24556 bytes
SHA-256: 087f4e36730a73011ad78cb948b529159944300230b76082b778d7c60137c88f
font_01_sfnt_off0000813c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x813C 2824 bytes
SHA-256: 381f6d859be141449dd645f7be1484d2a1cf49218dc471b402dae69eaa2b11d5
font_02_sfnt_off00008ade.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ADE 18412 bytes
SHA-256: ee277532c3187caf3da016130e4cbd3fee848ac0b1174d0f40fc16c12ed3c41d

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