Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff8696f7c5c692ab…

MALICIOUS

PDF

57.4 KB Created: 2021-05-19 06:01:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 4e7ce308d4d3487f15f43476f77c5f99 SHA-1: 0cdf563fdfacb103be3437edf1e90161fb46dee3 SHA-256: ff8696f7c5c692ab4fa7f784035b536dc24315ab9ef8a246f8e825b3c94a9bb5
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded URLs and a document body that explicitly mentions "Coin Master Free Spins Link 2021" and "free-roblox-generator". The presence of multiple URLs pointing to game-related downloads, including one using an IP address, strongly suggests a phishing or malware distribution attempt. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8160

Heuristics 4

  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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-spins-link-2021-game-hack
    • http://110.232.82.59/__statics/gudangsoal/files/free-roblox-generator-for-roblox_GM431946152.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/free-shirt-roblox_GM431946152.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/coin-master-hack-tool-v1-9-pc_GM406889139.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/100-free-spins-coin-master_GM406889139.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/free-minecraft-windows-10-account_GM479516143.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/coin-master-hack-no-survey-or-verification_GM406889139.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/coin-master-70-spin-link-2021_GM406889139.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/claim-free-spins-coin-master_GM406889139.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/coin-master-free-spins-hack-apk-download_GM406889139.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/free-spins-for-coin-master_GM406889139.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/free-robux-hack-2021_GM431946152.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/best-free-roblox-outfits_GM431946152.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/roblox-skins-boy-free_GM431946152.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/change-roblox-username-free_GM431946152.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/coin-master-hacks-for-gold-cards_GM406889139.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/free-accessories-roblox_GM431946152.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/apps-for-free-robux_GM431946152.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdf
    • http://110.232.82.59/__statics/gudangsoal/files/heroes-online-roblox_GM431946152.pdf
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.html
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000502c.bin
693a80fc235ca34b2cdb2c400d5e87ce5469d8efd9ace49db217fad00f64093a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x502C 27716 bytes
font_01_sfnt_off00009110.bin
e7854aff7cbc8fbdeb85d2b3d6248d12dc820ede8a581f4eac107fa6446c2222		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9110 3088 bytes
font_02_sfnt_off00009bdb.bin
cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BDB 7960 bytes
font_03_sfnt_off0000af01.bin
405c435adaafa0da304b7a4986d8f56c56dc87ed278d5cff2ac0c57977d8d7e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF01 18456 bytes
font_04_sfnt_off0000d1a5.bin
fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD1A5 4272 bytes

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