Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9873139678765f8…

MALICIOUS

PDF

35.9 KB Created: 2021-05-11 07:24:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 1c5ef8833146203effa8fc6a718c636c SHA-1: daa4f3f2b4b6b2f0deba2a9757f42cdc3906502a SHA-256: f9873139678765f8238f0d3346f8f67dc595ed25c5d5d247f08faba41887fc3e
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a lure for game hacks, linking to a suspicious URL. It also explicitly instructs the user to copy and paste content into a command-line context, indicating an attempt to trick the user into executing arbitrary commands. The document body contains text related to 'Hacks For Minecraft Bedrock' and a call to action to access a generator.

Machine Learning

  • Nyx PDF Classifier clean score 0.0282

Heuristics 5

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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/hacks-for-minecraft-bedrock-game-hack PDF link annotation
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000033f9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33F9 24204 bytes
SHA-256: 0a69e3e2050bfdbf7f81c3a53591dac7897afebb7238b954273b6cc06ced2df1
font_01_sfnt_off00006b04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B04 18268 bytes
SHA-256: 92f6e8526b02627b1408819f1618724de120737fe6927f0c4c019a746b3c5a34

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