Malicious PDF — malware analysis report

Static analysis result for SHA-256 c644df7dba64fd82…

MALICIOUS

PDF

45.0 KB Created: 2021-05-18 02:42:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3a706dc772e1e8ddfa496b8f08db0804 SHA-1: 96b3e0697f3630a7d32046cd0717f63054fb9ce5 SHA-256: c644df7dba64fd82628d163a90024f149702c6087420fe4a167eb0423fd42a9f
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains multiple embedded URLs pointing to websites offering game hacks and cheats, suggesting a lure for users seeking to exploit games. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs further supports a malicious intent. While no scripts were extracted, the document's structure and embedded links indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/how-many-levels-are-there-in-coin-master-game-hack
    • https://elearning.man4cirebon.sch.id/__statics/gudangsoal/files/minecraft-hack-2021_GM479516143.pdf
    • https://elearning.man4cirebon.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-31-march-2021_GM406889139.pdf
    • https://elearning.man4cirebon.sch.id/__statics/gudangsoal/files/how-to-get-a-free-dominus-in-roblox_GM431946152.pdf
    • https://elearning.man4cirebon.sch.id/__statics/gudangsoal/files/you-promised-my-son-free-robux_GM431946152.pdf
    • https://elearning.man4cirebon.sch.id/__statics/gudangsoal/files/free-coins-for-planet-master-game_GM406889139.pdf
    • https://elearning.man4cirebon.sch.id/__statics/gudangsoal/files/coin-master-daily-spins_GM406889139.pdf
    • https://elearning.man4cirebon.sch.id/__statics/gudangsoal/files/is-roblox-free-on-nintendo-switch_GM431946152.pdf
    • https://elearning.man4cirebon.sch.id/__statics/gudangsoal/files/was-minecraft-ever-free_GM479516143.pdf
    • https://elearning.man4cirebon.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdf
    • https://elearning.man4cirebon.sch.id/__statics/gudangsoal/files/roblox-free-rubox_GM431946152.pdf
    • https://elearning.man4cirebon.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-for-iphone_GM406889139.pdf
    • https://elearning.man4cirebon.sch.id/__statics/gudangsoal/files/free-spin-coin_GM406889139.pdf
    • https://elearning.man4cirebon.sch.id/__statics/gudangsoal/files/free-robux-codes-generator_GM431946152.pdf
    • https://elearning.man4cirebon.sch.id/__statics/gudangsoal/files/hack-download_GM431946152.pdf
    • https://elearning.man4cirebon.sch.id/__statics/gudangsoal/files/spin-and-coin-link_GM406889139.pdf
    • https://elearning.man4cirebon.sch.id/__statics/gudangsoal/files/hack-coin-master-pc_GM406889139.pdf
    • https://elearning.man4cirebon.sch.id/__statics/gudangsoal/files/toolbox-for-minecraft-ios_GM479516143.pdf
    • https://elearning.man4cirebon.sch.id/__statics/gudangsoal/files/coin-master-hack-club_GM406889139.pdf
    • https://elearning.man4cirebon.sch.id/__statics/gudangsoal/files/microsoft-free-robux_GM431946152.pdf
    • https://elearning.man4cirebon.sch.id/__statics/gudangsoal/files/minecraft-free-computer-game_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ada.bin
fdb8cc0c1effd8de643167bb620e2333d7499ad3933663fc46fb591bab743035		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ADA 24548 bytes
font_01_sfnt_off0000825c.bin
8c2546387700f45186c395d475006178ee984eabbc175bcf1ee6eb58ba8b57aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x825C 3204 bytes
font_02_sfnt_off00008d5f.bin
7a3e09ddd81ff0bf88cf020c99e068e580145ca5d489a9015f3b374a3ae3c451		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D5F 18244 bytes

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