Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fcc12f14ad95a50…

MALICIOUS

PDF

46.2 KB Created: 2021-05-14 07:38:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: c500519c5fc54479fc43febe0b64b465 SHA-1: ce99d62107d3a5aa5fa873ad8b8ebe3398955ca4 SHA-256: 9fcc12f14ad95a50c139ea7acab22422f53239df64e622c99d7e25e160e12704
82 Risk Score

Malware Insights

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

The document presents itself as a lure for free in-game items, likely to trick users into clicking malicious links. The presence of a fake CAPTCHA heuristic strongly suggests a social engineering tactic to bypass user caution. The embedded URL leads to a site offering game hacks, further supporting the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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-account-game-hack PDF link annotation
    • http://stitchingart.com/images/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • http://stitchingart.com/images/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://stitchingart.com/images/coin-master-tiradas-gratis-2021_GM406889139.pdfIn PDF document text
    • http://stitchingart.com/images/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://stitchingart.com/images/free-spin-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://stitchingart.com/images/coin-master-hack-2021-iphone_GM406889139.pdfIn PDF document text
    • http://stitchingart.com/images/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • http://stitchingart.com/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://stitchingart.com/images/coin-master-level-3_GM406889139.pdfIn PDF document text
    • http://stitchingart.com/images/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • http://stitchingart.com/images/coin-master-spins_GM406889139.pdfIn PDF document text
    • http://stitchingart.com/images/coin-master-hacks-for-android_GM406889139.pdfIn PDF document text
    • http://stitchingart.com/images/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://stitchingart.com/images/free-minecraft-client_GM479516143.pdfIn PDF document text
    • http://stitchingart.com/images/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://stitchingart.com/images/roblox-character-free_GM431946152.pdfIn PDF document text
    • http://stitchingart.com/images/coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://stitchingart.com/images/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • http://stitchingart.com/images/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://stitchingart.com/images/google-moon-active_GM406889139.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_off00004abe.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ABE 26444 bytes
SHA-256: e3d232773b374ed0c7f586d314614474a6e341b77d578e6517760c24f389d435
font_01_sfnt_off00008899.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8899 3204 bytes
SHA-256: 8c2546387700f45186c395d475006178ee984eabbc175bcf1ee6eb58ba8b57aa
font_02_sfnt_off0000939c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x939C 17848 bytes
SHA-256: 81db58af0d0a7c54bfcbf00b0a30aba5f5662412ae545e00ecca40055587a372

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