Malicious PDF — malware analysis report

Static analysis result for SHA-256 22dd2da20d13b4ca…

MALICIOUS

PDF

32.9 KB Created: 2021-07-19 12:50:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: c14ee7492773b42709967a51c186b5a7 SHA-1: f54dee2a78d16ee893e5f5e51937881398fee9e6 SHA-256: 22dd2da20d13b4cabb626b1f2b25719699e859dd92315ad78cf61c10c42ff438
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of 'free coins' and 'game hacks' to entice users. It contains multiple embedded URLs, including one pointing to 'netcdn.tw', which is flagged as a redirector for game hacks. The document body also contains a call-to-action phrase, 'CLICK HERE TO ACCESS COIN MASTER GENERATOR', further reinforcing the deceptive nature of the lure. The primary intent appears to be directing users to malicious or scam websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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 http://netcdn.tw/app/406889139/free-coins-for-coin-master-game-hack PDF link annotation
    • https://selesindihome.com/ckfinder/userfiles/files/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/tiktok-followers-for-free_GM835599320.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/how-to-get-tiktok-famous-free_GM835599320.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • https://selesindihome.com/ckfinder/userfiles/files/i-got-hacked-on-roblox_GM431946152.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_002_off00002d48.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2D48 22884 bytes
SHA-256: afc26891896cf1fc8433462cfcee034cbc57ad560cb64feced408b3e4bc373a2
font_01_sfnt_off000060ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60AC 17712 bytes
SHA-256: fd51fa1b849cf95139b510f282bcd47e41e352499df1938c7ca947a320e7b070

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