Malicious PDF — malware analysis report

Static analysis result for SHA-256 70cbc7798a197618…

MALICIOUS

PDF

42.6 KB Created: 2021-05-13 18:45:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 7b1a9c62930bae6ef912eb94447effa0 SHA-1: d1574b17269e42354b0025a841f17d4216dd0841 SHA-256: 70cbc7798a197618449797dc72a27b418af1c469b48cad848b9ee93cb05787cd
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document presents a fake CAPTCHA or human verification prompt to trick the user into clicking a link. This is a common lure for phishing or malware distribution. The embedded URL, https://netcdn.xyz/app/406889139/coin-master-free-coins-link-2021-today-game-hack, likely leads to a malicious payload download. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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-free-coins-link-2021-today-game-hack
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox_GM431946152.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/coin-master-game-free-spin-download_GM406889139.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/free-spins-coin-master-2021_GM406889139.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/coin-master-unlimited-spins-apk-free-download_GM406889139.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/free-spins-coin-master-blogspot_GM406889139.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/daily-free-spins-coin-master_GM406889139.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/free-coins-and-spins-coin-master-2021_GM406889139.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/100-free-spins-coin-master_GM406889139.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spin-and-coin-link_GM406889139.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/roblox-com-robux_GM431946152.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/how-to-earn-free-spins-coin-master_GM406889139.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/free-spins-coin-master-generator_GM406889139.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/coin-master-generator-hack_GM406889139.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts_GM431946152.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/how-to-make-a-free-minecraft-account_GM479516143.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/free-minecraft-bedrock_GM479516143.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/coin-master-free-blogspot_GM406889139.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/minecraft-bedrock-for-free_GM479516143.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/hack-coin-master-apk-2021_GM406889139.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/minecraft-pe-apk-download_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c0a.bin
0f02c5ef87546c3e807e6b453efad295363c03dadc7e8452f7c55eab1486bad2		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C0A 24096 bytes
font_01_sfnt_off0000831c.bin
54ee628be55815102d4fd2b2c16d0cf2d83f73b68c782c007c481b291bfa8535		 pdf-font-stream PDF embedded font (sfnt) at offset 0x831C 18636 bytes

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