Malicious PDF — malware analysis report

Static analysis result for SHA-256 61d5affe551604de…

MALICIOUS

PDF

36.6 KB Created: 2021-05-21 16:15:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e36e85085c384048c2d9f7caad5d20c1 SHA-1: c8ca77725c53bc245ef058fbb3e2a47e46366f42 SHA-256: 61d5affe551604ded533a1ba414fd85c887e89bd80bc86e6ca66e7eaff592f67
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF document exhibits social engineering tactics, specifically a 'ClickFix' lure, instructing the user to execute commands or click links. The embedded URLs and document body content promote downloading game-related hacks and cheats, which are common pretexts for malware distribution. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

Heuristics 4

  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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/479516143/free-cracked-minecraft-server-hosting-game-hack
    • https://www.belajar.mansalotim.sch.id/__statics/gudangsoal/files/how-to-get-roblox-premium-for-free_GM431946152.pdf
    • https://www.belajar.mansalotim.sch.id/__statics/gudangsoal/files/coin-master-mod-version-free-download-2021_GM406889139.pdf
    • https://belajar.mansalotim.sch.id/__statics/gudangsoal/files/minecraft-free-ios-no-verification_GM479516143.pdf
    • https://www.belajar.mansalotim.sch.id/__statics/gudangsoal/files/roblox-hack-codes_GM431946152.pdf
    • https://belajar.mansalotim.sch.id/__statics/gudangsoal/files/free-robux-groups-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000034b6.bin
914e2755d0f69c8dd46c23a05d85a0c9cdf9ac7ce61cc8ab16d203e13e49aae0
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34B6 24852 bytes
font_01_sfnt_off00006d76.bin
ba0f030c0cc107481e20c12ca1589c572af24e76c5a10e5606b48741d170eee6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D76 18456 bytes