Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c3d9ec914889093…

MALICIOUS

PDF

38.0 KB Created: 2021-05-22 16:38:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 40c3ac0d0c43b5fa1275302247309c68 SHA-1: 2cefff436e50511ccb92c0fd6af51f16151d1f8b SHA-256: 7c3d9ec9148890939f0b31e775d0342c23a26db2564c18f7192c7ec83bb9dfcd
82 Risk Score

Malware Insights

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

The PDF contains heuristics indicating social engineering tactics, specifically instructing the user to press Win+R or paste a command, consistent with ClickFix attacks. It also embeds external URIs and multiple URLs that likely lead to malicious content, possibly a second-stage payload. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

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/minecraft-font-free-game-hack
    • http://sfera-express.ru/images/free-draw-roblox_GM431946152.pdf
    • http://sfera-express.ru/images/how-to-install-minecraft-for-free_GM479516143.pdf
    • http://sfera-express.ru/images/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdf
    • http://sfera-express.ru/images/free-roblox-accounts-that-work_GM431946152.pdf
    • http://sfera-express.ru/images/coin-master-level-4_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000034e0.bin
a819e0e2a507d212e39e237a9b53063fc56c0bc0b813828d77bf2a68634dae29		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34E0 30248 bytes
font_01_sfnt_off0000751f.bin
48684535abb05df1a4efb13fd94135dee175bf6b61229e4eaa41ff3ed13e5a52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x751F 17712 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.