Malicious PDF — malware analysis report

Static analysis result for SHA-256 06dc5688a7c10924…

MALICIOUS

PDF

47.1 KB Created: 2021-05-12 16:34:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 69a0c215f100a117db2d9f3462831f8b SHA-1: 4970631f669eba9b6f73da54c68bea94b06dbda6 SHA-256: 06dc5688a7c10924556f360ffca77965a55aef511a1f7e8a8ad0ae8fc5c8d0a9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting a 'Coin Master free spin link'. The presence of a download button lure and the ML classifier's high confidence score further support its malicious nature. The document's primary function appears to be directing users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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-spin-link-today-50-game-hack In PDF document text
    • http://www.fluidtech.hu/images/coin-master-heaven-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • http://www.fluidtech.hu/images/hack-coin-master-8-ball-pool_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/how-to-get-free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/wurst-mc_GM479516143.pdfIn PDF document text
    • http://www.fluidtech.hu/images/coin-master-heaven-links-free-spins_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/hack-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://www.fluidtech.hu/images/coin-master-free-spin-and-trading-group_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/1x1x1x1-roblox-id_GM431946152.pdfIn PDF document text
    • http://www.fluidtech.hu/images/how-to-hack-coin-master-using-es-file_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/free-roblox-website_GM431946152.pdfIn PDF document text
    • http://www.fluidtech.hu/images/coin-master-pc-hack-tool_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://www.fluidtech.hu/images/coin-master-hack-trick-2021_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.fluidtech.hu/images/mcpe-free-download_GM479516143.pdfIn PDF document text
    • http://www.fluidtech.hu/images/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://www.fluidtech.hu/images/free-robux-app_GM431946152.pdfIn PDF document text
    • http://www.fluidtech.hu/images/how-to-get-free-outfits-on-roblox_GM431946152.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b64.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B64 25100 bytes
SHA-256: 00b8d2a1406d46c6aa816c3e3099493f105981070a06bcd4f5706566818bc33c
font_01_sfnt_off00008417.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8417 3768 bytes
SHA-256: 95f620fbad1b53fc57c1f404362359c14c300ce58b36c942efe6d3e139b062ba
font_02_sfnt_off0000915f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x915F 19692 bytes
SHA-256: cc178e6eb3fcd75a3b3ecf146bb24dd9aac0fd15c42b9efd9003190969fc700e

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