Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0c52c52980cbba6…

MALICIOUS

PDF

42.2 KB Created: 2021-05-17 08:05:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 93c11a23563ebdc0dcc905f963c132ae SHA-1: 28d8d18a519d6ba12a8dd20019f3a3b8479aeca2 SHA-256: f0c52c52980cbba65e07d397aab609b05fe2271e3ccff02b66f23c0ac2a506bc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of 'free spins and coins' for the game Coin Master to trick users into clicking malicious links. The document contains multiple embedded URLs, including a primary redirector at `https://netcdn.xyz/app/406889139/free-spins-and-coins-on-coin-master-game-hack`. The presence of these links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content or further stages of an attack. No scripts were extracted from this sample.

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-spins-and-coins-on-coin-master-game-hack In PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/roblox-premium-free_GM431946152.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/coin-master-32-android-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/hack-coin-master-32-mod-apk_GM406889139.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/roblox-controversy_GM431946152.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/coin-master-heaven-daily-free-spins-and-coins-links_GM406889139.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/rare-free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/free-flip-master-coins_GM406889139.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/113-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/free-robux-videos_GM431946152.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/coin-master-mod-version-free-download-ios_GM406889139.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_off00004acd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ACD 24652 bytes
SHA-256: cb3671ae60ce65948263aad7010f6cf3bd4dc2ae23334e979281a9c044c56a39
font_01_sfnt_off00008371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8371 18060 bytes
SHA-256: 64690fddacb88a1b87eb78a3bf181b542b813998c8d2539429c7660090ba79fa

Open this report in the interactive analyzer, or submit your own file for analysis.