Malicious PDF — malware analysis report

Static analysis result for SHA-256 19c7ad267d6eab85…

MALICIOUS

PDF

42.7 KB Created: 2021-05-11 08:02:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: ee2b64d02dff8c47817551fc9900cfb4 SHA-1: 74f317e0d7c8ed610b72c94ba22b913ee2b0f005 SHA-256: 19c7ad267d6eab855272c681e40fdff73796130e8804a6056e20c614c3f98e93
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF document contains a high-severity heuristic indicating it links to a 'free generator / game hack' lure. The embedded URL, https://netcdn.xyz/app/406889139/coin-master-hack-review-game-hack, likely serves as a redirector to a malicious site or a payload download. The document body and numerous other extracted URLs reinforce the theme of game hacks and cheats, suggesting a social engineering tactic to entice users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-hack-review-game-hack PDF link annotation
    • http://manegeri1kotatasikmalaya.sch.id/__statics/gudangsoal/files/real-working-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://manegeri1kotatasikmalaya.sch.id/__statics/gudangsoal/files/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • http://manegeri1kotatasikmalaya.sch.id/__statics/gudangsoal/files/free-minecraft-mods-for-ps4_GM479516143.pdfIn PDF document text
    • http://manegeri1kotatasikmalaya.sch.id/__statics/gudangsoal/files/hack-coin-master-1_GM406889139.pdfIn PDF document text
    • http://manegeri1kotatasikmalaya.sch.id/__statics/gudangsoal/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://manegeri1kotatasikmalaya.sch.id/__statics/gudangsoal/files/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://manegeri1kotatasikmalaya.sch.id/__statics/gudangsoal/files/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://manegeri1kotatasikmalaya.sch.id/__statics/gudangsoal/files/free-pet-food-coin-master_GM406889139.pdfIn PDF document text
    • http://manegeri1kotatasikmalaya.sch.id/__statics/gudangsoal/files/hack-download_GM431946152.pdfIn PDF document text
    • http://manegeri1kotatasikmalaya.sch.id/__statics/gudangsoal/files/coin-master-hacks-to-get-spins_GM406889139.pdfIn PDF document text
    • http://manegeri1kotatasikmalaya.sch.id/__statics/gudangsoal/files/free-redeem-code-for-coin-master_GM406889139.pdfIn PDF document text
    • http://manegeri1kotatasikmalaya.sch.id/__statics/gudangsoal/files/coin-master-free-download-app_GM406889139.pdfIn PDF document text
    • http://manegeri1kotatasikmalaya.sch.id/__statics/gudangsoal/files/free-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://manegeri1kotatasikmalaya.sch.id/__statics/gudangsoal/files/www-coinmaster_GM406889139.pdfIn PDF document text
    • http://manegeri1kotatasikmalaya.sch.id/__statics/gudangsoal/files/coin-master-free-spins-2021-today_GM406889139.pdfIn PDF document text
    • http://manegeri1kotatasikmalaya.sch.id/__statics/gudangsoal/files/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
    • http://manegeri1kotatasikmalaya.sch.id/__statics/gudangsoal/files/coin-master-hack-account_GM406889139.pdfIn PDF document text
    • http://manegeri1kotatasikmalaya.sch.id/__statics/gudangsoal/files/coin-master-hack-spin-generator-tool_GM406889139.pdfIn PDF document text
    • http://manegeri1kotatasikmalaya.sch.id/__statics/gudangsoal/files/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://manegeri1kotatasikmalaya.sch.id/__statics/gudangsoal/files/daily-coin-master-free-link_GM406889139.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_off00004be2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BE2 24824 bytes
SHA-256: f3c9e3d61d1be7540b6552b2f40011dc87f990b42427c2f2d4a39b0e580f886a
font_01_sfnt_off0000855c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x855C 17996 bytes
SHA-256: bfe601b020b171f100e70e38fab7406fb887819b27a361e00f5b71bc8f64446b

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